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QCD at imaginary chemical potential with Wilson fermions · Around

2013

QCD at imaginary chemical potential with Wilson fermions

Alexandru, Andrei, Li, Anyi

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We investigate the phase diagram in the temperature, imaginary chemical potential plane for QCD with three degenerate quark flavors using Wilson type fermions.

While more expensive than the staggered fermions used in past studies in this area, Wilson fermions can be used safely to simulate systems with three quark flavors.
In this talk, we focus on the (pseudo)critical line that extends from $\mu=0$ in the imaginary chemical potential plane, trace it to the Roberge-Weiss line, and determine its location relative to the Roberge-Weiss transition point.
In order to smoothly follow the (pseudo)critical line in this plane we perform a multi-histogram reweighting in both temperature and chemical potential.

Built on

A. Roberge and N. Weiss, Gauge theories with imaginary chemical potential and the phases of QCD
1986
Earlier work this paper cites.
A. M. Ferrenberg and R. H. Swendsen, Optimized Monte Carlo analysis
1989
Earlier work this paper cites.
P. de Forcrand and O. Philipsen, The QCD phase diagram for small densities from imaginary chemical potential
2002
Earlier work this paper cites.
M. D’Elia and M.-P. Lombardo, Finite density QCD via imaginary chemical potential
2003
Earlier work this paper cites.
M. D’Elia and M. P. Lombardo, QCD thermodynamics from an imaginary μ B \mu_{B} : Results on the four flavor lattice model
2004
Earlier work this paper cites.

Similar

A. Alexandru, M. Faber, I. Horváth, and K.-F. Liu, Lattice QCD at finite density via a new canonical approach
2005
Cited alongside, same era.
M. D’Elia, F. Di Renzo, and M. P. Lombardo, The strongly interacting quark gluon plasma, and the critical behaviour of QCD at imaginary μ \mu
Original
2007
Cited alongside, same era.
M. D’Elia and F. Sanfilippo, The Order of the Roberge-Weiss endpoint (finite size transition) in QCD
Original
2009
Cited alongside, same era.
M. D’Elia and F. Sanfilippo, Thermodynamics of two flavor QCD from imaginary chemical potentials
Original
2009
Cited alongside, same era.
P. de Forcrand and O. Philipsen, Constraining the QCD phase diagram by tricritical lines at imaginary chemical potential
Original
2010
Cited alongside, same era.

Then

K. Nagata and A. Nakamura, Wilson Fermion Determinant in Lattice QCD
Original
2010
Later among the works it cites.
K. Nagata and A. Nakamura, Imaginary Chemical Potential Approach for the Pseudo-Critical Line in the QCD Phase Diagram with Clover-Improved Wilson Fermions
Original
2011
Later among the works it cites.
A. Alexandru and U. Wenger, QCD at non-zero density and canonical partition functions with Wilson fermions
Original
2011
Later among the works it cites.
A. Li, A. Alexandru, and K.-F. Liu, Critical point of N f = 3 N_{f}=3 QCD from lattice simulations in the canonical ensemble
Original
2011
Later among the works it cites.

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