1Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027
2Computing Center, University of Kentucky, Lexington, KY 40506, USA
3CSSM and Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, SA 5005, Australia
Quenched Chiral Logarithm Diverge in Very Light Quark Region from the Overlap Lattice Quantum Chromodynamics
YING He-Ping1;DONG Shao-Jing1,2;ZHANG Jian-Bo1,3
1Zhejiang Institute of Modern Physics, Zhejiang University, Hangzhou 310027
2Computing Center, University of Kentucky, Lexington, KY 40506, USA
3CSSM and Department of Physics and Mathematical Physics, University of Adelaide, Adelaide, SA 5005, Australia
Abstract： With an exact chiral symmetry, overlap fermions allow us to reach very light quark region. In the minimum mps = 179 MeV, the quenched chiral logarithm diverge is examined. The chiral logarithm parameter δ is calculated from both the pseudo-scalar meson mass m2ps diverge channel and the pseudo-scalar decay constant fP channel. In both the cases, we obtain δ = 0.25±0.03. We also observe that the quenched chiral logarithm diverge occurs only in the mps ≤ 400 MeV region.
YING He-Ping;DONG Shao-Jing;ZHANG Jian-Bo;. Quenched Chiral Logarithm Diverge in Very Light Quark Region from the Overlap Lattice Quantum Chromodynamics[J]. 中国物理快报, 2003, 20(4): 473-474.
YING He-Ping, DONG Shao-Jing, ZHANG Jian-Bo,. Quenched Chiral Logarithm Diverge in Very Light Quark Region from the Overlap Lattice Quantum Chromodynamics. Chin. Phys. Lett., 2003, 20(4): 473-474.
2003, Vol. 20 
