出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We report our on-going finite density and temperature project, where we employWilson fermions
with the clover terms and Iwasaki improved gauge action. We are studying both pure imaginary
and pure real chemical potential regions at the same time. For the real baryon chemical potential,
we use the reweighting method. Since our goal is to simulate QCD at extreme conditions towards
realistic parameters, i.e., lighter quark and smaller lattice spacing, and higher orders of fermion
reweighting factors are non-negligible and converges slowly as the quark mass decreases, we
develop a new simple Taylor expansion method, where an expansion parameter is exp(±m/T)−1,
not m itself. This gives simple formula for any order of fermion reweighting factors. We use also
the hybrid-list and dilution techniques in “practical all-to-all propagators”.
