47 research outputs found
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 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 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 and Wilson gauge action at on
lattices with .Comment: Presented at the 33rd International Symposium on Lattice Field
Theory, 14 -18 July 2015, Kobe International Conference Center, Kobe, Japa