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arXiv · 0710.0998

The nature of the finite temperature QCD transition as a function of the quark masses

G. Endrodi·Z. Fodor·S. D. Katz·K. K. Szabo
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Abstract

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 $m_0 \lesssim 0.07 \cdot m_{phys}$ for $N_T=4$ and $m_0 \lesssim 0.12 \cdot m_{phys}$ for $N_T=6$ lattices.

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G. Endrodi, Z. Fodor, S. D. Katz, K. K. Szabo. 2007-10-04. The nature of the finite temperature QCD transition as a function of the quark masses. https://arxiv.org/abs/0710.0998

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