Speaker
Jangho Kim
(Goethe University Frankfurt am Main)
Description
The straightforward Monte Carlo simulation to Investigate the QCD phase diagram in finite termperature and baryon chemical potential is prohibited by the sign problem due to the complex fermion determinant. Indirect method can explore the low density region $\mu_B \le 3T$, where the sign problem is not severe. Rewriting the action can make the sign problem mild. Hence, we introduce the effective theoey and as a first step, we present the SU(3) spin model which is a effective model of Polyakov loop for QCD at finite temperature and density. After that we introduce the effective 3D model which is combined strong coupling expansion and hopping parameter expansion for QCD in heavy dense regime.
