2006/02/10 by Philippe de Forcrand, Slavo Kratochvila · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Theoretical and Computational Physics #hep-lat
paper · pdf · doi:10.1016/j.nuclphysbps.2006.01.007
published as Nucl. Phys. B (Proc. Suppl.) 153 (2006) 62 · 6 pages, 9 figures, proceedings of "Workshop on Computational Hadron Physics", Cyprus, Sept. 2005
openalex publication_date 2006/02/10 · arxiv created 2006/02/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a canonical method where the properties of QCD are directly obtained as a function of the baryon density rho, rather than the chemical potential mu. We apply this method to the determination of the phase diagram of four-flavor QCD. For a pion mass mpi ∼ 350 MeV, the first-order transition between the hadronic and the plasma phase gives rise to a co-existence region in the T-rho plane, which we study in detail, including the associated interface tension. We obtain accurate results for systems containing up to 30 baryons and quark chemical potentials mu up to 2 T. Our T-mu phase diagram agrees with the literature when mu/T \lesssim 1. At larger chemical potential, we observe a ``bending down'' of the phase boundary. We compare the free energy in the confined and deconfined phase with predictions from a hadron resonance gas and from a free massless quark gas respectively.