Lattice2010

Session

Parallel 28: Nonzero temperature and density

15 Jun 2010, 16:40

Villasimius, Sardinia

266. Study of finite temperature QCD with 2+1 flavors via Taylor expansion and imaginary chemical potential

Rossella Falcone (Bielefeld Universitaet, Germany)

15/06/2010, 16:40

Nonzero temperature and density

We study QCD with 2+1 flavors at nonzero temperature and nonzero chemical potential. We present preliminary results obtained from lattice calculations performed with an improved staggered ferminios action (p4-action) on lattice with temporal extent N_t = 4 on a line of constant physics with the strange quark mass adjusted to its physical value and the pion mass of about 220 MeV. We...

31. Chiral and deconfinement transitions in strong coupling lattice QCD

Kohtaroh Miura (Yukawa Institute for Theoretical Physics, Kyoto University)

15/06/2010, 17:00

Nonzero temperature and density

We investigate the QCD phase diagram based on the strong coupling lattice QCD. In particular, we focus on the interplay between the chiral and deconfinement transitions in the strong coupling framework. We show that the critical temperature at zero chemical potential becomes lower and closer to Mont-Carlo data due to the Polyakov loop effects. We will show some results on finite chemical...

22. Effective Potential and Phase Diagram in the Strong-Coupling Lattice QCD with Next-to-Next-to-Leading Order and Polyakov Loop Effects

Takashi Nakano (Yukawa Institute of Theoretical Physics, Kyoto university)

15/06/2010, 17:20

Nonzero temperature and density

Strong Coupling Lattice QCD (SC-LQCD) is a method directly based on QCD, and has been applied to investigate the properties of the QCD phase diagram in the finite chemical potential region. The previous studies in next-to-leading order (NLO) evaluation assert that the effect of NLO in the effective potential are renormalized in modification of the quark mass and chemical potential in...

40. Thermodynamic quark susceptibilties in the PNJL model

Marco Cristoforetti (ECT*)

15/06/2010, 17:40

Nonzero temperature and density

The Monte-Carlo method is applied to the Polyakov-loop extended Nambu–Jona-Lasinio (PNJL) model. This allows to go beyond the saddle-point approximation in a mean-field calculation and introduces fluctuations around the mean fields. We study the impact of fluctuations on the thermodynamics of the model, in the two quark flavors case. We calculate the second order Taylor expansion coefficients...