Study of lattice QCD at finite baryon density using the canonical approach

TL;DR

This paper explores a canonical approach to lattice QCD at finite baryon density, addressing the sign problem by enabling analytical continuation from imaginary to real chemical potential, with results at two temperatures.

Contribution

It introduces a formulation of the canonical partition function method for lattice QCD and demonstrates its application at two different temperatures.

Findings

Results obtained for two temperatures: T/Tc=0.93 and 0.99

Shows the feasibility of the canonical approach in finite density lattice QCD

Provides data supporting the method's reliability for analytical continuation

Abstract

At finite baryon density lattice QCD first-principle calculations can not be performed due to the sign problem. In order to circumvent this problem, we use the canonical approach, which provides reliable analytical continuation from the imaginary chemical potential region to the real chemical potential region. We briefly present the canonical partition function method, describe our formulation, and show the results, obtained for two temperatures: $T/T_c = 0.93$ and $T/T_c = 0.99$ in lattice QCD with two flavors of improved Wilson fermions.