* Astronomy

Blobrana · Blobrana

Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology (NIST) have demonstrated an ultrafast laser that offers a record combination of high speed, short pulses and high average power. The same NIST group also has shown that this type of laser, wh...

Blobrana · Blobrana

Indian claims finding new cube root formula It has eluded experts for centuries, but now an Indian, following in the footsteps of Aryabhatt, one of the earliest Indian mathematicians, claims to have worked out a simple formula to find any number's cube root. Nirbhay Singh Nahar, a retired chemical...

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Title: Limb darkening laws for two exoplanet host stars derived from 3D stellar model atmospheres Authors: W. Hayek, D. Sing, F. Pont, M. Asplund We compare limb darkening laws derived from 3D hydrodynamical model atmospheres and 1D hydrostatic MARCS models for the host stars of the two transitin...

Blobrana · Blobrana

Title: Cosmic Bubble Collisions Authors: Matthew Kleban I briefly review the physics of cosmic bubble collisions in false-vacuum eternal inflation. My purpose is to provide an introduction to the subject for readers unfamiliar with it, focussing on recent work related to the prospects for obse...

Blobrana · Blobrana

Death-defying time crystal could outlast the universe[url=http://www.newscientist.com/article/mg21328484.000-deathdefying-time-crys...

Blobrana · Blobrana

A new form of ice may exist at high pressures and when temperatures are near absolute zero, between minus 4 to 50 Kelvin, according to researchers at the National Synchrotron Radiation Research Centre. Density functional theory (DFT) calculations under these conditions correctly accounts fo...

Blobrana · Blobrana

Title: Final results of the EDELWEISS-II WIMP search using a 4-kg array of cryogenic germanium detectors with interleaved electrodes Authors: EDELWEISS Collaboration: E. Armengaud, C. Augier, A. Benoît, L. Bergé, J. Blümer, A. Broniatowski, V. Brudanin, B. Censier, M. Chapellier, F. Charlie...

Blobrana · Blobrana

Title: Universal spin transport in a strongly interacting Fermi gas Authors: Ariel Sommer, Mark Ku, Giacomo Roati & Martin W. Zwierlein Transport of fermions, particles with half-integer spin, is central to many fields of physics. Electron transport runs modern technology, defining stat...

Blobrana · Blobrana

In physics, more specifically relativistic quantum mechanics, the Dirac equation is a wave equation, formulated by British physicist Paul Dirac in 1928. It provided a description of elementary spin-½ particles, such as electrons, consistent with both the principles of quantum mechanics and t...

Blobrana · Blobrana

One of the most dramatic recent results in string theory is the derivation of the Bekenstein-Hawking entropy formula for black holes obtained by counting the microscopic string states which form a black hole. Bekenstein noted that black holes obey an "area law", dM = K dA, where 'A' is th...

Blobrana · Blobrana

Title: Unitarity and the Holographic S-Matrix Authors: A. Liam Fitzpatrick, Jared Kaplan The bulk S-Matrix can be given a non-perturbative definition in terms of the flat space limit of AdS/CFT. We show that the unitarity of the S-Matrix, ie the optical theorem, can be derived by studying the beha...

Blobrana · Blobrana

Title: Quarkonium states in a complex-valued potential Authors: Matthew Margotta, Kyle McCarty, Christina McGahan, Michael Strickland, David Yager-Elorriaga We calculate quarkonium binding energies using a realistic complex-valued potential for both an isotropic and anisotropic quark...

Blobrana · Blobrana

Aussie galaxy survey to lead to "new physics" Australian astronomers have released the first set of data from the first project to look at the effects of "dark energy" halfway back in the Universe's lifetime. Called WiggleZ ("wiggles"), the project is being done...

Blobrana · Blobrana

Title: When a Muon Is Not a Muon--- Detecting Fast Long-Lived Charged Particles from Cascade Decays Using a Mass Scan Authors: Iftah Galon, Yael Shadmi, Shahrazad Tarboush, Shlomit Tarem If produced at the LHC, long-lived charged particles (LLCPs) would leave tracks in the muon detector. Time-o...

Blobrana · Blobrana

The E-Cat in Politics Most of the discussion surrounding Andrea Rossi's E-Cat has focused on the scientific aspects, and the future commercialisation of the technology. Sooner or later, however, if this device is indeed a new and improved source of energy it will be discussed in the political real...

Topic		Started By	Replies	Last Post
	Laser frequency comb (Preview) Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology (NIST) have demonstrated an ultrafast laser that offers a record combination of high speed, short pulses and high average power. The same NIST group also has shown that this type of laser, wh...	Blobrana	5	Feb 7 23:00 2012 by Blobrana
	Cube root formula (Preview) Indian claims finding new cube root formula It has eluded experts for centuries, but now an Indian, following in the footsteps of Aryabhatt, one of the earliest Indian mathematicians, claims to have worked out a simple formula to find any number's cube root. Nirbhay Singh Nahar, a retired chemical...	Blobrana	0	Feb 6 22:43 2012 by Blobrana
	Limb darkening law (Preview) Title: Limb darkening laws for two exoplanet host stars derived from 3D stellar model atmospheres Authors: W. Hayek, D. Sing, F. Pont, M. Asplund We compare limb darkening laws derived from 3D hydrodynamical model atmospheres and 1D hydrostatic MARCS models for the host stars of the two transitin...	Blobrana	0	Feb 4 23:03 2012 by Blobrana
	Cosmic Bubble Collisions (Preview) Title: Cosmic Bubble Collisions Authors: Matthew Kleban I briefly review the physics of cosmic bubble collisions in false-vacuum eternal inflation. My purpose is to provide an introduction to the subject for readers unfamiliar with it, focussing on recent work related to the prospects for obse...	Blobrana	1	Feb 1 17:31 2012 by Blobrana
	Time crystal (Preview) Death-defying time crystal could outlast the universe[url=http://www.newscientist.com/article/mg21328484.000-deathdefying-time-crys...	Blobrana	0	Jan 19 21:22 2012 by Blobrana
	Ice 9 Water (Preview) A new form of ice may exist at high pressures and when temperatures are near absolute zero, between minus 4 to 50 Kelvin, according to researchers at the National Synchrotron Radiation Research Centre. Density functional theory (DFT) calculations under these conditions correctly accounts fo...	Blobrana	6	Jan 18 00:27 2012 by Blobrana
	WIMP dark matter Darkmatter (Preview) Title: Final results of the EDELWEISS-II WIMP search using a 4-kg array of cryogenic germanium detectors with interleaved electrodes Authors: EDELWEISS Collaboration: E. Armengaud, C. Augier, A. Benoît, L. Bergé, J. Blümer, A. Broniatowski, V. Brudanin, B. Censier, M. Chapellier, F. Charlie...	Blobrana	2	Jan 17 04:22 2012 by Blobrana
	fermionic matter (Preview) Title: Universal spin transport in a strongly interacting Fermi gas Authors: Ariel Sommer, Mark Ku, Giacomo Roati & Martin W. Zwierlein Transport of fermions, particles with half-integer spin, is central to many fields of physics. Electron transport runs modern technology, defining stat...	Blobrana	1	Jan 16 01:50 2012 by Blobrana
	The Dirac equation (Preview) In physics, more specifically relativistic quantum mechanics, the Dirac equation is a wave equation, formulated by British physicist Paul Dirac in 1928. It provided a description of elementary spin-½ particles, such as electrons, consistent with both the principles of quantum mechanics and t...	Blobrana	0	Jan 3 00:43 2012 by Blobrana
	Bekenstein-Hawking entropy (Preview) One of the most dramatic recent results in string theory is the derivation of the Bekenstein-Hawking entropy formula for black holes obtained by counting the microscopic string states which form a black hole. Bekenstein noted that black holes obey an "area law", dM = K dA, where 'A' is th...	Blobrana	0	Jan 3 00:23 2012 by Blobrana
	Scattering matrix (Preview) Title: Unitarity and the Holographic S-Matrix Authors: A. Liam Fitzpatrick, Jared Kaplan The bulk S-Matrix can be given a non-perturbative definition in terms of the flat space limit of AdS/CFT. We show that the unitarity of the S-Matrix, ie the optical theorem, can be derived by studying the beha...	Blobrana	0	Dec 22 20:43 2011 by Blobrana
	Quarkonium (Preview) Title: Quarkonium states in a complex-valued potential Authors: Matthew Margotta, Kyle McCarty, Christina McGahan, Michael Strickland, David Yager-Elorriaga We calculate quarkonium binding energies using a realistic complex-valued potential for both an isotropic and anisotropic quark...	Blobrana	4	Dec 22 14:34 2011 by Blobrana
	WiggleZ project (Preview) Aussie galaxy survey to lead to "new physics" Australian astronomers have released the first set of data from the first project to look at the effects of "dark energy" halfway back in the Universe's lifetime. Called WiggleZ ("wiggles"), the project is being done...	Blobrana	5	Dec 22 07:48 2011 by Blobrana
	sleptons (Preview) Title: When a Muon Is Not a Muon--- Detecting Fast Long-Lived Charged Particles from Cascade Decays Using a Mass Scan Authors: Iftah Galon, Yael Shadmi, Shahrazad Tarboush, Shlomit Tarem If produced at the LHC, long-lived charged particles (LLCPs) would leave tracks in the muon detector. Time-o...	Blobrana	0	Dec 21 20:05 2011 by Blobrana
	E-Cat (Preview) The E-Cat in Politics Most of the discussion surrounding Andrea Rossi's E-Cat has focused on the scientific aspects, and the future commercialisation of the technology. Sooner or later, however, if this device is indeed a new and improved source of energy it will be discussed in the political real...	Blobrana	4	Dec 5 23:32 2011 by Blobrana
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