2005/12/31 by Noboru Kawamoto, N. Kawamoto, K. Miura +4
Physics and Astronomy · #Baryon #Condensed matter physics #Fermion #Gauge theory #High-Energy Particle Collisions Research #Lattice QCD #Lattice field theory #Particle physics #Phase (matter) #Phase boundary #Phase diagram #Phase transition #Physics #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Tricritical point #hep-lat #nucl-th
paper · pdf · doi:10.1103/physrevd.75.014502
published as Phys.Rev.D75:014502,2007 · 18 pages, 10 figures
arxiv created 2006/12/11 · openalex publication_date 2007/01/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the phase diagram of quark matter at finite temperature (T) and chemical potential (\ensuremathμ) in the strong coupling limit of lattice QCD for color SU(3). We derive an analytical expression of the effective free energy as a function of T and \ensuremathμ, including baryon effects. The finite temperature effects are evaluated by integrating over the temporal link variable exactly in the Polyakov gauge with an antiperiodic boundary condition for fermions. The obtained phase diagram shows the first and the second order phase transition at low and high temperatures, respectively, and those are separated by the tricritical point in the chiral limit. Baryon has effects to reduce the effective free energy and to extend the hadron phase to a larger \ensuremathμ direction at low temperatures.