ar X iv : h ep - l at / 0 11 02 23 v 1 3 1 O ct 2 00 1 1 Screening mass responses to chemical potential at finite temperature ∗

ar X iv : h ep - l at / 0 11 02 23 v 2 1 9 N ov 2 00 1 1 Screening mass responses to chemical potential at finite temperature

a Department of Physics, Hiroshima University, Higashi-Hiroshima 739-8526, Japan b Institut für Theoretische Physik, ETH-Hönggerberg,CH-8093 Zürich,Switzerland c Theory Division, CERN, CH-1211 Geneva 23, Switzerland d Department of Physics, Tezukayama University, Nara 631-8501, Japan e Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan f IMC, Hiroshima University,...

ar X iv : h ep - l at / 0 01 10 13 v 3 8 N ov 2 00 0 1 Chemical potential response of meson masses at finite temperature

We study the response of meson masses to the chemical potential (∂m/∂µ) at high temperature and at zero chemical potential on N f = 2 lattice with staggered fermions. Preliminary results for the meson composed of different quarks show that ∂m/∂µ|µ=0 is negative in the confinement phase and positive in the deconfinement phase.

ar X iv : h ep - l at / 0 51 01 02 v 1 2 5 O ct 2 00 5 Phase structure of lattice QCD with Wilson and Neuberger quarks at finite temperature and density ∗

We review our results for lattice QCD at finite temperature and density from analytical and numerical calculations with Wilson fermions and overlap fermions. c Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

ar X iv : h ep - l at / 0 11 00 06 v 2 3 O ct 2 00 1 1 Matrix elements of ∆ S = 2 operators with Wilson fermions

ar X iv : h ep - l at / 0 11 00 89 v 2 3 1 O ct 2 00 1 1 Chemical potential response of pseudoscalar meson masses in the

Using the Nambu–Jona-Lasinio (NJL) model we study chemical potential response of the pion and kaon masses as a function of temperature and chemical potential, i.e., ∂m ∂µ (T , µ). First, we obtain the responses assuming the vector–axial vector coupling is zero (gV =0). Then, we include a non-zero gV and study the effects of gV on the responses. We find that the behavior of ∂m ∂µ for the pion is...