2005/09/22 by J. B. Kogut, Kogut, J. B., D. K. Sinclair +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.hep-lat/0509095
openalex publication_date 2005/09/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We simulate 3-flavour lattice QCD at finite temperature and isospin chemical potential μI. In particular we study the nature of the finite temperature transition for quark masses close to the critical mass at which this transition for zero chemical potentials changes from a first order transition to a crossover. We find that the Binder cumulants, used to determine the position of this transition, have very strong dt dependence. This leads us to an estimate of the critical mass which is about 20% below previous estimates. In addition, when this dt dependence is taken into account, we find that the Binder cumulants show very little dependence on muI. From this we conclude that we do not as yet see any evidence for the expected critical endpoint. We have argued previously that the position and nature of the finite temperature transition for small muI should be the same as that for small quark-number chemical potential mu.