Preliminary QCD phase transition line for 695 MeV dynamical staggered fermions from effective Polyakov line actions

We present a phase diagram for SU(3) lattice gauge theory with 695 MeV dynamical staggered fermions, in the plane of temperature and chemical potential, obtained from effective Polyakov line actions. The derivation is via the method of relative weights, and the effective theories are solved at finite chemical potential by mean field theory.Comment: 8 pages, 4 figures, 1 table; presented at the 34th International Symposium on Lattice Field Theory (Lattice 2017), June 18 - 24, 2017, Granada, Spain; to appear in AIP Conference Proceeding

Polyakov line actions from SU(3) lattice gauge theory with dynamical fermions via relative weights

We extract an effective Polyakov line action from an underlying SU(3) lattice gauge theory with dynamical fermions via the relative weights method. The center-symmetry breaking terms in the effective theory are fit to a form suggested by effective action of heavy-dense quarks, and the effective action is solved at finite chemical potential by a mean field approach. We show results for a small sample of lattice couplings, lattice actions, and lattice extensions in the time direction. We find in some instances that the long-range couplings in the effective action are very important to the phase structure, and that these couplings are responsible for long-lived metastable states in the effective theory. Only one of these states corresponds to the underlying lattice gauge theory.Comment: 11 pages, 7 figures, Confinement12 Conference. arXiv admin note: substantial text overlap with arXiv:1603.0965

Polyakov line actions from SU(3)SU(3) lattice gauge theory with dynamical fermions: first results via relative weights

We apply the relative weights method to extract an effective Polyakov line action, at finite chemical potential, from an underlying $SU(3)$ lattice gauge theory with dynamical fermions. The center-symmetry breaking terms in the effective theory are fit to a form suggested by the hopping-parameter expansion, and the effective action is solved at finite chemical potential by a mean field approach. We present preliminary results for one-link staggered fermions with mass $ma=1.0$ and Wilson gauge action at $\beta=5.4$ on $L^3\times4$ lattices with $L=16$.Comment: Presented at the 33rd International Symposium on Lattice Field Theory, 14 -18 July 2015, Kobe International Conference Center, Kobe, Japa