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The excited hadron spectrum in lattice QCD using a new variance reduction method
The excited hadron spectrum lattice QCD
2011/1/7
Progress in calculating the spectrum of excited baryons and mesons in lattice QCD is described. Correlation matrices of sets of spatially-extended hadron operators have been studied and their effectiv...
Poisson Statistics in the High Temperature QCD Dirac Spectrum
Poisson Statistics the High Temperature QCD Dirac Spectrum
2010/12/27
At low temperature in the epsilon regime of QCD the low-end of the Dirac spectrum is described by random matrix theory. In contrast, there has been no similarly well established staistical descriptio...
The phase-shift of isospin-2 pi-pi scattering from lattice QCD
phase-shift isospin-2 pi-pi scattering lattice QCD
2011/1/14
Finite-volume lattice QCD calculations o er the possibility of extracting resonance parameters
from the energy-dependent elastic phase-shift computed using the Luscher technique. In this letter,as a...
Absence of sign problem in the (saddle point approximation of the) nilpotency expansion of QCD at finite chemical potential
nilpotency expansion finite chemical potential
2011/1/13
We have developed a method to derive the (approximate) quark contribution to the fermion free
energy of QCD on a lattice, at finite temperature and chemical potential, with Kogut-Susskind
fermions i...
Analysis of the coupling constants ga0ηπ0 and ga0η′π0 with light-cone QCD sum rules
a0(980) light-cone QCD sum rules
2009/12/24
In this article, we take the point of view that the light scalar meson a0(980) is a conventional qq state, and calculate the coupling constants ga0ηπ0 and ga0η′π0 with the light-cone QCD sum rules. Th...
27 April 2007，Physicists in Germany and Hungary claim that ultracold atoms in an optical lattice could be used to simulate certain aspects of quantum chromodynamics (QCD) -- the theory that describes ...