The finite temperature QCD transition for physical quark masses is a crossover. For smaller quark masses a first-order phase transition is expected. Using Symanzik improved gauge and stout improved fermion action for 2+1 flavour staggered QCD we give estimates/bounds for the phase line separating the first-order region from the crossover one. The calculations are carried out on two different lattice spacings. Our conclusion for the critical mass is m0 0.07 · mphys for NT = 4 and m0 0.12 · mphys for NT = 6 lattices.
|Original language||English (US)|
|Journal||Proceedings of Science|
|State||Published - 2007|
|Event||25th International Symposium on Lattice Field Theory, LATTICE 2007 - Regensburg, Germany|
Duration: Jul 30 2007 → Aug 4 2007
All Science Journal Classification (ASJC) codes