Tricritical point of lattice QCD with Wilson quarks at finite temperature and density

Details Tricritical point of lattice QCD with Wilson quarks at finite temperature and density Tricritical point of lattice QCD with Wilson quarks at finite temperature and density

2004-05-20

arxiv.org/abs/hep-lat/0405019v3

Phys.Rev. D70 (2004) 091504

Physics

High Energy Physics

High Energy Physics - Lattice

Published version

Scientific paper

10.1103/PhysRevD.70.091504

First principle study of QCD at finite temperature $T$ and chemical potential $\mu$ is essential for understanding a wide range of phenomena from heavy-ion collisions to cosmology and neutron stars. However, in the presence of finite density, the critical behavior lattice gauge theory without species doubling, is unknown. At strong coupling, we examine the phase structure on the $(\mu,T)$ plane, using Hamiltonian lattice QCD with Wilson fermions. A tricritical point is found, separating the first and second order chiral phase transitions. Such a tricritical point at finite $T$ has not been found in previous work in the Hamiltonian formalism with Kogut-Susskind fermions or naive fermions.

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