Numerical study of partition function zeros in 12-flavor lattice QCD finds strong evidence for first-order transitions at m_q=0.02 with scaling d=3.98(6) and suggests critical mass m_q^c approximately 0.05 where the transition ends.
Exploring the phase structure of 12-flavor $SU(3)$
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abstract
We are studying the $SU(3)$ gauge theory with 12 staggered fermions, searching for the endpoint of the line of first-order phase transitions in the mass--beta plane. This endpoint plays an important role in our understanding of the phase diagram of this model. Having found this endpoint with high statistics on a small lattice using unimproved staggered fermions, we are working to find it on larger lattices and with improved actions. For an action improved with nHYP-smeared staggered fermions, we discuss the effect of slowly turning off the improvement on the broken shift symmetry phase.
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Zeros of the partition function for 12 flavor QCD
Numerical study of partition function zeros in 12-flavor lattice QCD finds strong evidence for first-order transitions at m_q=0.02 with scaling d=3.98(6) and suggests critical mass m_q^c approximately 0.05 where the transition ends.