Rajiv V. Gavai
(Tata Institute, Mumbai)
15/06/2010, 10:30
Nonzero temperature and density
I compute the deconfinement order parameter for the SU(2) lattice gauge
theory, the Polyakov loop, using the fixed scale approach for several
different scales and show how one can obtain a physical, renormalized, order
parameter. The generalization to other gauge theories, including quenched or
full QCD, is straightforward.
Hana Saito
(University of Tsukuba)
15/06/2010, 10:50
We study the order of the deconfinement phase transition in QCD with
Wilson quarks near the heavy quark limit.
We identify the transition from the shape of an effective potential
computed from the histogram of the plaquette.
We find that the first order transition of the heavy quark limit
gets weaker as the quark mass decreses
and turns into a crossover at a finite quark mass.
We...
Jens Langelage
(University of Bielefeld)
15/06/2010, 11:10
Nonzero temperature and density
Lattice Yang-Mills theories at finite temperature can be mapped onto
effective 3D Spin systems, thus facilitating their numerical
investigation. Using strong coupling expansions we derive the effective
action for Polyakov loops and investigate the effect of higher order
corrections. Results and numerical details are discussed in the subsequent
talk of Dr. Lottini.
Stefano Lottini
(Goethe-Universitaet, Frankfurt am Main)
15/06/2010, 11:30
Nonzero temperature and density
Within the Polyakov-loop effective theory for pure Yang-Mills obtained from a strong coupling expansion (as presented in Dr. Langelage's talk), a single simulation on a 3D system yields, in principle, a whole array of critical couplings for the full theory, at all values of $N_\tau$. Here we present the Monte Carlo details and the practical aspects of such approach, its results, and we discuss...
Guido Cossu
(KEK Theory Center)
15/06/2010, 11:50
Nonzero temperature and density
We present preliminary results of the recently started project of Finite Temperature QCD with overlap fermions al KEK. We started a series of simulations to assess the effects of fixing the topological sector and we will show the first calculations of thermodynamical observables and topological susceptibility.
Keh-Fei Liu
(University of Kentucky)
15/06/2010, 12:10
Nonzero temperature and density
Results on locating the critical point for QCD at
N_f =3 with the canonical ensemble approach will be presented.
An algorithm aimed at simulations on larger volumes will be discussed.
