* Astronomy

Call them the Energiser bunny of particle physics: the GammeV collaboration reins in costs, works fast and just keeps going, and going The collaboration of 10 people formed in April 2007 to look for candidates for dark matter and dark energy. Although several members work on other experiments as we...

Title: Towards Quantum Superposition of Living Organisms Authors: Oriol Romero-Isart, Mathieu L. Juan, Romain Quidant, J. Ignacio Cirac The most striking feature of quantum mechanics is the existence of superposition states, where an object appears to be in different situations at the same ti...

True muonium, a long-theorised but never-seen atom, might be observed in future experiments, thanks to recent theoretical work by researchers at the Department of Energy's SLAC National Accelerator Laboratory and Arizona State University. True muonium was first theorised more than 50 years a...

Evidence of Macroscopic Quantum Tunnelling Detected in Nanowires A team of researchers at the University of Illinois has demonstrated that, counter to classical Newtonian mechanics, an entire collection of superconducting electrons in an ultrathin superconducting wire is able to "tun...

Title: Positron Annihilation Lifetime Spectroscopy in the analysis of microstructural changes of Y-TZP ceramics Author: P. Parente, G. Ferro, A. Tucci, L. Esposito, G. Timellini Positron Annihilation Lifetime Spectroscopy (PALS) technique was used for microstructural characterisation o...

In a forthcoming Physical Review Letter article, a group of physicists at the University of Nevada, Reno are reporting an analysis of an experiment on violation of mirror symmetry in atoms. Their refined analysis sets new limits on a hypothesised particle, the extra Z-boson, carving out the lowe...

Theoretical physicists in the Netherlands have proposed a way to make superstrings in the laboratory. If their idea can be put into practice, it would allow aspects of string theory to be explored in an experiment for the first time. The new approach relies on exploiting the properties of ultr...

Title: Hawking-like radiation as tunnelling from the apparent horizon in a FRW Universe Authors: Tao Zhu, Ji-Rong Ren, Douglas Singleton We study Hawking-like radiation in a Friedmann-Robertson-Walker (FRW) universe using the quasi-classical WKB/tunnelling method which pictures this pro...

Physicists working to disprove "Lorentz invariance" -- Einstein's prediction that matter and massless particles will behave the same no matter how they're turned or how fast they go -- won't get that satisfaction from muon neutrinos, at least for the time being, says a consortium of sc...

Title: Neutrino Mass Hierarchy and neutron-anti-neutron Oscillation from Baryogenesis Authors: K. S. Babu, P. S. Bhupal Dev, R. N. Mohapatra (Version v3) It has been recently proposed that the matter-antimatter asymmetry of the universe may have its origin in "post-sphaleron baryogene...

Title: Study of multi-muon events produced in p-pbar collisions at sqrt(s)=1.96 TeV Authors: CDF Collaboration We report a study of multi-muon events produced at the Fermilab Tevatron collider and recorded by the CDFII detector. In a data set acquired with a dedicated dimuon trigger and corresp...

An experiment suggests that a fundamental constant of nature, called mu, the mass ratio of two fundamental subatomic particles has decreased over the last 12 billion years. The startling finding comes from a team of scientists from the Free University in Amsterdam in the Netherlands and the E...

Title: Almost Certain Escape from Black Holes in Final State Projection Models Author: Seth Lloyd Recent models of the black-hole final state suggest that quantum information can escape from a black hole by a process akin to teleportation. These models rely on a controvers...

Fermilab physicists discover "triple-scoop" baryon Three-quark particle contains one quark from each family. Physicists of the DZero experiment at the Department of Energy's Fermi National Accelerator Laboratory have discovered a new heavy particle, the b (pronounced "zi...

A University of Utah study is shedding light on an important, unsolved physics problem: the relationship between chaos theory - which is based on 300-year-old Newtonian physics - and the modern theory of quantum mechanics. The study demonstrated a fundamental new property - what appears to be cha...

Any vibrating object should be slowed by quantum "virtual" particles that permeate empty space, according to theory. This weak "friction" should spew photons like sparks from a dangling bumper. In the 26 May PRL researchers propose detecting this effect by vibrating one end of a small reflective...

Title: Electron-Positron Pair Production in Space- or Time-Dependent Electric Fields Authors: Hagen Kleinert, Remo Ruffini, She-Sheng Xue Treating the production of electron and positron pairs by a strong electric field from the vacuum as a quantum tunnelling process we derive, in semiclass...

Fast-moving protons are much more likely to pair up with fast-moving neutrons than with other protons in the nuclei of atoms, according to a recent experiment performed at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility. The experiment confirms previous theoret...

Title: Stable quarks of the 4th family? Authors: K. Belotsky, M. Khlopov, K. Shibaev Existence of metastable quarks of new generation can be embedded into phenomenology of heterotic string together with new long range interaction, which only this new generation possesses. We discuss pr...

Weizmann Institute physicists have demonstrated, for the first time, the existence of 'quasiparticles' with one quarter the charge of an electron. This finding could be a first step toward creating exotic types of quantum computers that might be powerful, yet highly stable. Fractional electro...

Supersymmetry breaking Authors: Yael Shadmi These lectures provide a simple introduction to supersymmetry breaking. After presenting the basics of the subject and illustrating them in tree-level examples, we discuss dynamical supersymmetry breaking, emphasizing t...

Title: The search for Primordial Quark Nuggets among Near Earth Asteroids Authors: J.E. Horvath (IAG-Usp, Brazil) Primordial Quark Nuggets, remnants of the quark-hadron phase transition, may be hiding most of the baryon number in superdense chunks have been discussed for years always from the...

Physicists may have discovered the first "hybrid meson" at the KEK laboratory in Japan. The meson, first predicted over 25 years ago, appears to contain a gluon in addition to the quark and antiquark that are usually found in mesons. The new meson is currently known as the Y(394...

Title: What is the entropy of the universe? Authors: Paul Frampton, Stephen D.H. Hsu, Thomas W. Kephart, David Reeb Standard calculations suggest that the entropy of the universe is dominated by black holes, although they comprise only a tiny fraction of its total energy. We give a physical interp...

Whilst science fiction toys effortlessly with anti-matter, in reality it can be very hard to produce, so researchers around the world are celebrating a new break through in this area. For the first time, scientists using the BaBar experiment at the Stanford Linear Accelerator Center (SLAC) have o...

Mathematicians have mapped the inner workings of one of the most complicated structures ever studied: the object known as the exceptional Lie group E8. This achievement is significant both as an advance in basic knowledge and because of the many connections between E8 and other areas, including...

New research led by University of New Hampshire physicists has proved the existence of a new type of electron wave on metal surfaces: the acoustic surface plasmon, which will have implications for developments in nano-optics, high-temperature superconductors, and the fundamental understand...

A group of 50 international physicists, led by UC Riverside’s Ann Heinson, has detected for the first time a subatomic particle, the top quark, produced without the simultaneous production of its antimatter partner – an extremely rare event. The discovery of the single top quark could help scient...

Physics researchers working at the High Energy Accelerator Research Organization (KEK) Laboratory in Japan have observed a new type of interaction amongst quarks. The scientists reported at the Symposium on Lepton-Photon Interactions at High Energies, June 30-July 5 in Uppsala, Sweden, th...

In recent years, researchers have developed astonishing new insights into a hidden unity between the motion of objects in space and that of the smallest particles. It turns out there is an almost perfect parallel between the mathematics describing celestial mechanics and the mathematics gove...

New, higher precision data gathered at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) shows the Theta-plus pentaquark doesn't appear in another place it was expected. This intriguing finding contradicts evidence previously presente...

Physicists now have found a way to manipulate the spin of an electron with a jolt of voltage from a battery. In a new study, Richard Warburton, a physicist with Heriot-Watt University in Edinburgh, Scotland, applied voltage to an electron in a quantum dot (which is a tiny, nanometre-sized semi...

Title: Do Evaporating Black Holes Form Photospheres? Authors: Jane H. MacGibbon, B. J. Carr, Don N. Page (Version v5) Several authors, most notably Heckler, have claimed that the observable Hawking emission from a microscopic black hole is significantly modified by the formation of a photosphe...

Title: Observation of a Large Atomic Parity Violation Effect in Ytterbium Authors: K. Tsigutkin, D. Dounas-Frazer, A. Family, J. E. Stalnaker, V. V. Yashchuk, D. Budker (Version v3) Atomic parity violation has been observed in the 6s^2 1S0 - 5d6s 3D1 408-nm forbidden transition of ytterbium. The...

Title: Split Two-Higgs-Doublet Model and Neutrino Condensation Authors: Authors: Fei Wang, Wenyu Wang, Jin Min Yang (revised v3) We split the two-Higgs-doublet model by assuming very different vevs for the two doublets: the vev is at weak scale (174 GeV) for the doublet...

Radioactivity, discovered more than 100 years ago and studied by physicists ever since, would seem to be a relatively closed subject in science. However, since the 1960s, the pursuit of at least one open question about how nuclei spontaneously eject various particles has continued to nag experim...

Title: Status report of the Tokyo axion helioscope experiment Authors: Y. Inoue, M. Minowa, Y. Akimoto, R. Ota, T. Mizumoto, A. Yamamoto We have searched for solar axions with a detector which consists of a 4T x 2.3m superconducting magnet, PIN-photodiode X-ray detectors, and an altazimu...

Theoretical physicists Alexey Ponomarev, Peter Hänggi, and colleagues at the University of Augsburg, Germany, have proposed designs for a quantum-mechanical electric motor. Their motor consists of two ultracold atoms trapped in a ring of laser light. One atom has a electron missing and is el...

An international team of physicists has found strong evidence for the existence of a new doubly magic nucleus with an unconventional configuration of neutrons. The oxygen24 nucleus is also the first doubly-magic nucleus that is very unstable against radioactive decay. In addition to shedding f...

University of Chicago chemist David Mazziotti has developed a new method for determining the behaviour of electrons in atoms and molecules, a key ingredient in predicting chemical properties and reactions. He presented the details of his method in the Oct. 6 issue of the journal Physical Review L...

Title: A magneto-electric quantum wheel Authors: Alexander Feigel Here we show that self-propulsion in quantum vacuum may be achieved by rotating or aggregating magneto-electric nano-particles. The back-action follows from changes in momentum of electro-magnetic zero-point fluctuation...

Quantum entanglement could be responsible for mass, and could finally explain why the fundamental particles of matter have the mass they do. Sometimes, the interaction of two particles, say electrons, causes their individual properties, such as spin, to become "entangled". If y...

Scientists closer to build a practical quantum computer Physicists at the National Institute of Standards and Technology (NIST), US, have demonstrated sustained, reliable information processing operations on electrically charged atoms (ions), thus raising prospects for building a practi...

Title: Observation of the Goos-Hänchen Shift with Neutrons Authors: Victor-O. de Haan, Jeroen Plomp, Theo M. Rekveldt, Wicher H. Kraan, and Ad A. van Well The Goos-Hänchen effect is a spatial shift along an interface resulting from an interference effect that occurs for total internal reflecti...

Big bang flashgun to snap atomic anatomy A strange state of matter that dominated the early universe could be used to create ultra-fast flashes of radiation, brief enough to capture what's going on inside atomic nuclei. To take snapshots of rapid processes you need brief flashes of light. Until now...

Title: Astro-quark matter: a challenge facing astroparticle physics Authors: Renxin Xu (PKU) Quark matter both in terrestrial experiment and in astrophysics is briefly reviewed. Astrophysical quark matter could appear in the early Universe, in compact stars, and as cosmic rays. Emphasis is p...

Physicists have confirmed that neutrinos, which are thought to have played a key role during the creation of the Universe, have mass. This is the first major finding of the US-based Main Injector Neutrino Oscillation Search (Minos) experiment. The findings suggest that the Standard Model...

How do free electrons originate? Scientists at Max Planck Institute of Plasma Physics (IPP) in Garching and Greifswald and Fritz Haber Institute in Berlin have discovered a new way in which high-energy radiation in water can release slow electrons. Their results have now been published in the ren...

Testing the Best-Yet Theory of Nature The best theory for explaining the subatomic world got its start in 1928 when theorist Paul Dirac combined quantum mechanics with special relativity to explain the behaviour of the electron. The result was relativistic quantum mechanics, which became a majo...

Researchers Develop Method to Describe Binding of Protons and Neutrons A researcher at North Carolina State University has helped to develop a new method for describing the binding of protons and neutrons within nuclei. This method may improve scientists' ability to predict and understand astr...

The proton shrinks in size The proton seems to be 0.00000000000003 millimetres smaller than researchers previously thought, according to work published in today's issue of Nature. The difference is so infinitesimal that it might defy belief that anyone, even physicists, would care. But the new...

Canadian researchers discover method for direct measurement of the quantum wavefunction Scientists around the world now have a new tool to investigate the elementary units of nature. Until now, the quantum wavefunction was believed to be impossible to measure directly, since the very act of obs...

In quantum mechanics, the Heisenberg uncertainty principle states precise inequalities that constrain certain pairs of physical properties, such as measuring the present position while determining future momentum; both cannot be simultaneously done to arbitrarily high precision. That is...

Title: CP Violation and Mixing in Charm Meson Decays from BABAR Authors: Chunhui Chen Mixing and CP violation in charm meson decays provide a unique probe of possible physics beyond the standard model. In this paper, we give a brief review of the current measurements from the BABAR experiment. [url...

Normally, we think of building blocks as static objects. For instance, the brick and mortar used to build the local bank remain pretty much the same from the day it's built to the day it's torn down. But the building blocks of ordinary matter are different. These bricks are particles called quarks,...

Title: The Heisenberg-Euler Effective Action: 75 years on Authors: Gerald V. Dunne On this 75th anniversary of the publication of the Heisenberg-Euler paper on the full non-perturbative one-loop effective action for quantum electrodynamics I review their paper and discuss some of the impact i...

The theory has been around for more than 40 years, but only now has it been confirmed through direct and unambiguous experimental results. Working at the Advanced Light Source (ALS) of the U.S. Department of Energy’s Lawrence Berkeley National Laboratory, a team of researchers has observed the th...

Title: Observation of an excited Xi(b) baryon Authors: CMS Collaboration The observation of an excited b baryon via its strong decay into Xi(b)^- pi^+ (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at sqrt(s) = 7 TeV collected by the CMS experiment at the L...

	Forum	Replies	Views	Last Post
Quantum Chameleon particles (Preview)	Physics News	5	7015	Dec 18 20:03 2015 by Blobrana
Call them the Energiser bunny of particle physics: the GammeV collaboration reins in costs, works fast and just keeps going, and going The collaboration of 10 people formed in April 2007 to look for candidates for dark matter and dark energy. Although several members work on other experiments as we...
Quantum Schrodinger's cat (Preview)	Physics News	3	8276	Mar 8 22:26 2013 by Blobrana
Title: Towards Quantum Superposition of Living Organisms Authors: Oriol Romero-Isart, Mathieu L. Juan, Romain Quidant, J. Ignacio Cirac The most striking feature of quantum mechanics is the existence of superposition states, where an object appears to be in different situations at the same ti...
Quantum True muonium (Preview)	Physics News	0	2761	May 29 16:58 2009 by Blobrana
True muonium, a long-theorised but never-seen atom, might be observed in future experiments, thanks to recent theoretical work by researchers at the Department of Energy's SLAC National Accelerator Laboratory and Arizona State University. True muonium was first theorised more than 50 years a...
Quantum Quantum Tunnelling (Preview)	Physics News	1	2797	Oct 28 22:30 2011 by Blobrana
Evidence of Macroscopic Quantum Tunnelling Detected in Nanowires A team of researchers at the University of Illinois has demonstrated that, counter to classical Newtonian mechanics, an entire collection of superconducting electrons in an ultrathin superconducting wire is able to "tun...
Quantum Positron Annihilation Lifetime Spectroscopy (Preview)	Physics News	0	2844	May 24 17:27 2009 by Blobrana
Title: Positron Annihilation Lifetime Spectroscopy in the analysis of microstructural changes of Y-TZP ceramics Author: P. Parente, G. Ferro, A. Tucci, L. Esposito, G. Timellini Positron Annihilation Lifetime Spectroscopy (PALS) technique was used for microstructural characterisation o...
Quantum Extra Z bosons (Preview)	Physics News	1	3119	May 1 23:18 2009 by Blobrana
In a forthcoming Physical Review Letter article, a group of physicists at the University of Nevada, Reno are reporting an analysis of an experiment on violation of mirror symmetry in atoms. Their refined analysis sets new limits on a hypothesised particle, the extra Z-boson, carving out the lowe...
Universe Quantum Superstrings ( 1 2 3 4 5 … 9 ) (Preview)	Physics News	83	81848	Apr 25 10:21 2017 by Blobrana
Theoretical physicists in the Netherlands have proposed a way to make superstrings in the laboratory. If their idea can be put into practice, it would allow aspects of string theory to be explored in an experiment for the first time. The new approach relies on exploiting the properties of ultr...
Quantum Hawking-like radiation (Preview)	Physics News	0	2614	Feb 19 20:11 2009 by Blobrana
Title: Hawking-like radiation as tunnelling from the apparent horizon in a FRW Universe Authors: Tao Zhu, Ji-Rong Ren, Douglas Singleton We study Hawking-like radiation in a Friedmann-Robertson-Walker (FRW) universe using the quasi-classical WKB/tunnelling method which pictures this pro...
Quantum Lorentz invariance (Preview)	Physics News	5	11064	Feb 21 02:18 2011 by Blobrana
Physicists working to disprove "Lorentz invariance" -- Einstein's prediction that matter and massless particles will behave the same no matter how they're turned or how fast they go -- won't get that satisfaction from muon neutrinos, at least for the time being, says a consortium of sc...
Quantum Antimatter Baryogenesis (Preview)	Physics News	4	6909	Feb 22 23:52 2013 by Blobrana
Title: Neutrino Mass Hierarchy and neutron-anti-neutron Oscillation from Baryogenesis Authors: K. S. Babu, P. S. Bhupal Dev, R. N. Mohapatra (Version v3) It has been recently proposed that the matter-antimatter asymmetry of the universe may have its origin in "post-sphaleron baryogene...
Quantum New particles (Preview)	Physics News	5	6348	Jun 10 15:56 2011 by Blobrana
Title: Study of multi-muon events produced in p-pbar collisions at sqrt(s)=1.96 TeV Authors: CDF Collaboration We report a study of multi-muon events produced at the Fermilab Tevatron collider and recorded by the CDFII detector. In a data set acquired with a dedicated dimuon trigger and corresp...
Quantum Fundamental Constant Mu ( 1 2 ) (Preview)	Physics News	15	21453	Dec 14 07:30 2012 by Blobrana
An experiment suggests that a fundamental constant of nature, called mu, the mass ratio of two fundamental subatomic particles has decreased over the last 12 billion years. The startling finding comes from a team of scientists from the Free University in Amsterdam in the Netherlands and the E...
Blackholes Universe Quantum Quantum information ( 1 2 3 ) (Preview)	Physics News	28	35055	Jul 4 09:56 2017 by Blobrana
Title: Almost Certain Escape from Black Holes in Final State Projection Models Author: Seth Lloyd Recent models of the black-hole final state suggest that quantum information can escape from a black hole by a process akin to teleportation. These models rely on a controvers...
Quantum Baryon Cascade b baryon (Preview)	Physics News	4	11571	Nov 19 20:59 2014 by Blobrana
Fermilab physicists discover "triple-scoop" baryon Three-quark particle contains one quark from each family. Physicists of the DZero experiment at the Department of Energy's Fermi National Accelerator Laboratory have discovered a new heavy particle, the b (pronounced "zi...
Quantum Quantum Chaos (Preview)	Physics News	1	2947	Aug 8 16:18 2008 by Blobrana
A University of Utah study is shedding light on an important, unsolved physics problem: the relationship between chaos theory - which is based on 300-year-old Newtonian physics - and the modern theory of quantum mechanics. The study demonstrated a fundamental new property - what appears to be cha...
Universe Quantum Virtual Particles ( 1 2 ) (Preview)	Physics News	11	15971	Apr 25 09:56 2014 by Blobrana
Any vibrating object should be slowed by quantum "virtual" particles that permeate empty space, according to theory. This weak "friction" should spew photons like sparks from a dangling bumper. In the 26 May PRL researchers propose detecting this effect by vibrating one end of a small reflective...
Quantum Electron-Positron Pair Production (Preview)	Physics News	2	4721	Aug 5 12:51 2010 by Blobrana
Title: Electron-Positron Pair Production in Space- or Time-Dependent Electric Fields Authors: Hagen Kleinert, Remo Ruffini, She-Sheng Xue Treating the production of electron and positron pairs by a strong electric field from the vacuum as a quantum tunnelling process we derive, in semiclass...
Quantum Nucleon-nucleon interactions (Preview)	Physics News	0	2938	Jun 18 20:09 2008 by Blobrana
Fast-moving protons are much more likely to pair up with fast-moving neutrons than with other protons in the nuclei of atoms, according to a recent experiment performed at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility. The experiment confirms previous theoret...
Quantum Quarks (Preview)	Physics News	1	2823	Apr 2 22:39 2010 by Blobrana
Title: Stable quarks of the 4th family? Authors: K. Belotsky, M. Khlopov, K. Shibaev Existence of metastable quarks of new generation can be embedded into phenomenology of heterotic string together with new long range interaction, which only this new generation possesses. We discuss pr...
Quantum Quasiparticles (Preview)	Physics News	0	2863	Jun 3 15:26 2008 by Blobrana
Weizmann Institute physicists have demonstrated, for the first time, the existence of 'quasiparticles' with one quarter the charge of an electron. This finding could be a first step toward creating exotic types of quantum computers that might be powerful, yet highly stable. Fractional electro...
Quantum Supersymmetry ( 1 2 3 4 ) (Preview)	Physics News	34	37521	Dec 16 19:54 2015 by Blobrana
Supersymmetry breaking Authors: Yael Shadmi These lectures provide a simple introduction to supersymmetry breaking. After presenting the basics of the subject and illustrating them in tree-level examples, we discuss dynamical supersymmetry breaking, emphasizing t...
Quantum Primordial Quark Nuggets (Preview)	Physics News	1	4757	May 21 19:46 2010 by Blobrana
Title: The search for Primordial Quark Nuggets among Near Earth Asteroids Authors: J.E. Horvath (IAG-Usp, Brazil) Primordial Quark Nuggets, remnants of the quark-hadron phase transition, may be hiding most of the baryon number in superdense chunks have been discussed for years always from the...
Quantum Y(3940) (Preview)	Physics News	1	4669	Mar 10 18:53 2008 by Blobrana
Physicists may have discovered the first "hybrid meson" at the KEK laboratory in Japan. The meson, first predicted over 25 years ago, appears to contain a gluon in addition to the quark and antiquark that are usually found in mesons. The new meson is currently known as the Y(394...
Quantum Entropy (Preview)	Physics News	7	6546	Apr 23 17:37 2013 by Blobrana
Title: What is the entropy of the universe? Authors: Paul Frampton, Stephen D.H. Hsu, Thomas W. Kephart, David Reeb Standard calculations suggest that the entropy of the universe is dominated by black holes, although they comprise only a tiny fraction of its total energy. We give a physical interp...
Antimatter Quantum D-meson mixing (Preview)	Physics News	2	5119	Nov 15 22:26 2007 by Blobrana
Whilst science fiction toys effortlessly with anti-matter, in reality it can be very hard to produce, so researchers around the world are celebrating a new break through in this area. For the first time, scientists using the BaBar experiment at the Stanford Linear Accelerator Center (SLAC) have o...
Universe Lie group Quantum Lie group E8 ( 1 2 ) (Preview)	Physics News	19	26077	Mar 1 13:06 2012 by Blobrana
Mathematicians have mapped the inner workings of one of the most complicated structures ever studied: the object known as the exceptional Lie group E8. This achievement is significant both as an advance in basic knowledge and because of the many connections between E8 and other areas, including...
Quantum Electron wave (Preview)	Physics News	0	2815	Jul 6 01:28 2007 by Blobrana
New research led by University of New Hampshire physicists has proved the existence of a new type of electron wave on metal surfaces: the acoustic surface plasmon, which will have implications for developments in nano-optics, high-temperature superconductors, and the fundamental understand...
Quantum Top Quark (Preview)	Physics News	4	5900	Jul 23 16:08 2011 by Blobrana
A group of 50 international physicists, led by UC Riverside’s Ann Heinson, has detected for the first time a subatomic particle, the top quark, produced without the simultaneous production of its antimatter partner – an extremely rare event. The discovery of the single top quark could help scient...
Quantum Beauty quark (Preview)	Physics News	2	6586	Sep 6 05:17 2006 by Blobrana
Physics researchers working at the High Energy Accelerator Research Organization (KEK) Laboratory in Japan have observed a new type of interaction amongst quarks. The scientists reported at the Symposium on Lepton-Photon Interactions at High Energies, June 30-July 5 in Uppsala, Sweden, th...
Quantum Hidden Unity (Preview)	Physics News	0	2919	Sep 30 16:35 2005 by Blobrana
In recent years, researchers have developed astonishing new insights into a hidden unity between the motion of objects in space and that of the smallest particles. It turns out there is an almost perfect parallel between the mathematics describing celestial mechanics and the mathematics gove...
Quantum Pentaquark (Preview)	Physics News	2	5469	Jul 14 10:08 2015 by Blobrana
New, higher precision data gathered at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) shows the Theta-plus pentaquark doesn't appear in another place it was expected. This intriguing finding contradicts evidence previously presente...
Quantum Quantum Spin (Preview)	Physics News	0	2820	May 29 11:02 2005 by Blobrana
Physicists now have found a way to manipulate the spin of an electron with a jolt of voltage from a battery. In a new study, Richard Warburton, a physicist with Heriot-Watt University in Edinburgh, Scotland, applied voltage to an electron in a quantum dot (which is a tiny, nanometre-sized semi...
Quantum Hawking Radiation ( 1 2 3 4 ) (Preview)	Physics News	31	19885	Aug 26 12:31 2015 by Blobrana
Title: Do Evaporating Black Holes Form Photospheres? Authors: Jane H. MacGibbon, B. J. Carr, Don N. Page (Version v5) Several authors, most notably Heckler, have claimed that the observable Hawking emission from a microscopic black hole is significantly modified by the formation of a photosphe...
Quantum Parity Violation (Preview)	Physics News	2	5633	Mar 19 05:07 2010 by Blobrana
Title: Observation of a Large Atomic Parity Violation Effect in Ytterbium Authors: K. Tsigutkin, D. Dounas-Frazer, A. Family, J. E. Stalnaker, V. V. Yashchuk, D. Budker (Version v3) Atomic parity violation has been observed in the 6s^2 1S0 - 5d6s 3D1 408-nm forbidden transition of ytterbium. The...
Cern Quantum Boson Higgs Particles ( 1 2 3 4 5 … 10 ) (Preview)	Physics News	90	39323	Mar 3 16:06 2015 by Blobrana
Title: Split Two-Higgs-Doublet Model and Neutrino Condensation Authors: Authors: Fei Wang, Wenyu Wang, Jin Min Yang (revised v3) We split the two-Higgs-doublet model by assuming very different vevs for the two doublets: the vev is at weak scale (174 GeV) for the doublet...
Quantum Proton Radioactive Decay (Preview)	Physics News	4	9599	May 9 07:20 2011 by Blobrana
Radioactivity, discovered more than 100 years ago and studied by physicists ever since, would seem to be a relatively closed subject in science. However, since the 1960s, the pursuit of at least one open question about how nuclei spontaneously eject various particles has continued to nag experim...
Quantum Axion axions ( 1 2 ) (Preview)	Physics News	13	14476	Dec 30 10:56 2016 by Blobrana
Title: Status report of the Tokyo axion helioscope experiment Authors: Y. Inoue, M. Minowa, Y. Akimoto, R. Ota, T. Mizumoto, A. Yamamoto We have searched for solar axions with a detector which consists of a 4T x 2.3m superconducting magnet, PIN-photodiode X-ray detectors, and an altazimu...
Quantum Quantum electric motor (Preview)	Physics News	0	2733	Jun 10 20:20 2009 by Blobrana
Theoretical physicists Alexey Ponomarev, Peter Hänggi, and colleagues at the University of Augsburg, Germany, have proposed designs for a quantum-mechanical electric motor. Their motor consists of two ultracold atoms trapped in a ring of laser light. One atom has a electron missing and is el...
Quantum Doubly magic nuclei (Preview)	Physics News	0	2364	Apr 21 18:06 2009 by Blobrana
An international team of physicists has found strong evidence for the existence of a new doubly magic nucleus with an unconventional configuration of neutrons. The oxygen24 nucleus is also the first doubly-magic nucleus that is very unstable against radioactive decay. In addition to shedding f...
Quantum Electrons (Preview)	Physics News	9	9659	May 15 15:48 2012 by Blobrana
University of Chicago chemist David Mazziotti has developed a new method for determining the behaviour of electrons in atoms and molecules, a key ingredient in predicting chemical properties and reactions. He presented the details of his method in the Oct. 6 issue of the journal Physical Review L...
Quantum Quantum vacuum (Preview)	Physics News	5	9238	Nov 30 18:39 2016 by Blobrana
Title: A magneto-electric quantum wheel Authors: Alexander Feigel Here we show that self-propulsion in quantum vacuum may be achieved by rotating or aggregating magneto-electric nano-particles. The back-action follows from changes in momentum of electro-magnetic zero-point fluctuation...
Universe Quantum Quantum entanglement ( 1 2 3 4 5 ) (Preview)	Physics News	41	71174	Jul 12 09:53 2017 by Blobrana
Quantum entanglement could be responsible for mass, and could finally explain why the fundamental particles of matter have the mass they do. Sometimes, the interaction of two particles, say electrons, causes their individual properties, such as spin, to become "entangled". If y...
Quantum Quantum computer (Preview)	Computers	6	6624	May 16 19:41 2013 by Blobrana
Scientists closer to build a practical quantum computer Physicists at the National Institute of Standards and Technology (NIST), US, have demonstrated sustained, reliable information processing operations on electrically charged atoms (ions), thus raising prospects for building a practi...
Quantum Light Quantum mechanics (Preview)	Physics News	9	6013	Nov 8 03:16 2012 by Blobrana
Title: Observation of the Goos-Hänchen Shift with Neutrons Authors: Victor-O. de Haan, Jeroen Plomp, Theo M. Rekveldt, Wicher H. Kraan, and Ad A. van Well The Goos-Hänchen effect is a spatial shift along an interface resulting from an interference effect that occurs for total internal reflecti...
Quantum Quark-gluon plasma ( 1 2 ) (Preview)	Physics News	14	8784	Feb 9 19:38 2017 by Blobrana
Big bang flashgun to snap atomic anatomy A strange state of matter that dominated the early universe could be used to create ultra-fast flashes of radiation, brief enough to capture what's going on inside atomic nuclei. To take snapshots of rapid processes you need brief flashes of light. Until now...
Quantum Astro-quark matter ( 1 2 ) (Preview)	Physics News	10	16154	Oct 9 14:56 2012 by Blobrana
Title: Astro-quark matter: a challenge facing astroparticle physics Authors: Renxin Xu (PKU) Quark matter both in terrestrial experiment and in astrophysics is briefly reviewed. Astrophysical quark matter could appear in the early Universe, in compact stars, and as cosmic rays. Emphasis is p...
Neutrino Quantum Neutrinos ( 1 2 3 4 5 … 6 ) (Preview)	Physics News	59	71028	Feb 11 09:32 2015 by Blobrana
Physicists have confirmed that neutrinos, which are thought to have played a key role during the creation of the Universe, have mass. This is the first major finding of the US-based Main Injector Neutrino Oscillation Search (Minos) experiment. The findings suggest that the Standard Model...
Quantum Electrons (Preview)	Physics News	0	2473	Jan 20 11:47 2010 by Blobrana
How do free electrons originate? Scientists at Max Planck Institute of Plasma Physics (IPP) in Garching and Greifswald and Fritz Haber Institute in Berlin have discovered a new way in which high-energy radiation in water can release slow electrons. Their results have now been published in the ren...
Quantum Spin-statistics theorem (Preview)	Physics News	1	4873	Jun 25 14:28 2010 by Blobrana
Testing the Best-Yet Theory of Nature The best theory for explaining the subatomic world got its start in 1928 when theorist Paul Dirac combined quantum mechanics with special relativity to explain the behaviour of the electron. The result was relativistic quantum mechanics, which became a majo...
Quantum Proton and Neutron Binding (Preview)	Physics News	0	2413	Apr 14 19:11 2010 by Blobrana
Researchers Develop Method to Describe Binding of Protons and Neutrons A researcher at North Carolina State University has helped to develop a new method for describing the binding of protons and neutrons within nuclei. This method may improve scientists' ability to predict and understand astr...
Quantum Protons (Preview)	Physics News	0	2723	Jul 7 22:22 2010 by Blobrana
The proton shrinks in size The proton seems to be 0.00000000000003 millimetres smaller than researchers previously thought, according to work published in today's issue of Nature. The difference is so infinitesimal that it might defy belief that anyone, even physicists, would care. But the new...
Quantum Quantum wavefunction (Preview)	Physics News	1	2632	Oct 26 15:16 2016 by Blobrana
Canadian researchers discover method for direct measurement of the quantum wavefunction Scientists around the world now have a new tool to investigate the elementary units of nature. Until now, the quantum wavefunction was believed to be impossible to measure directly, since the very act of obs...
Quantum Heisenberg uncertainty principle (Preview)	Physics News	4	2998	Sep 12 03:11 2012 by Blobrana
In quantum mechanics, the Heisenberg uncertainty principle states precise inequalities that constrain certain pairs of physical properties, such as measuring the present position while determining future momentum; both cannot be simultaneously done to arbitrarily high precision. That is...
Quantum Charm Meson Decays (Preview)	Physics News	3	5990	Mar 1 04:31 2013 by Blobrana
Title: CP Violation and Mixing in Charm Meson Decays from BABAR Authors: Chunhui Chen Mixing and CP violation in charm meson decays provide a unique probe of possible physics beyond the standard model. In this paper, we give a brief review of the current measurements from the BABAR experiment. [url...
Quantum Quantum Chromodynamics (Preview)	Physics News	7	9553	Feb 26 16:22 2012 by Blobrana
Normally, we think of building blocks as static objects. For instance, the brick and mortar used to build the local bank remain pretty much the same from the day it's built to the day it's torn down. But the building blocks of ordinary matter are different. These bricks are particles called quarks,...
Quantum Quantum electrodynamics (Preview)	Physics News	0	2007	Feb 9 10:22 2012 by Blobrana
Title: The Heisenberg-Euler Effective Action: 75 years on Authors: Gerald V. Dunne On this 75th anniversary of the publication of the Heisenberg-Euler paper on the full non-perturbative one-loop effective action for quantum electrodynamics I review their paper and discuss some of the impact i...
Quantum Spinons and Holons (Preview)	Physics News	1	2731	Apr 18 19:52 2012 by Blobrana
The theory has been around for more than 40 years, but only now has it been confirmed through direct and unambiguous experimental results. Working at the Advanced Light Source (ALS) of the U.S. Department of Energy’s Lawrence Berkeley National Laboratory, a team of researchers has observed the th...
Quantum Baryon Beauty Xi(b) baryon (Preview)	Physics News	1	2668	Apr 28 15:41 2012 by Blobrana
Title: Observation of an excited Xi(b) baryon Authors: CMS Collaboration The observation of an excited b baryon via its strong decay into Xi(b)^- pi^+ (plus charge conjugates) is reported. The measurement uses a data sample of pp collisions at sqrt(s) = 7 TeV collected by the CMS experiment at the L...