The deconfining phase transition in full QCD with two dynamical flavors

Abstract

We investigate the deconfining phase transition in SU(3) pure gauge theory and in full QCD with two flavors of staggered fermions. The phase transition is detected by measuring the free energy in presence of an abelian monopole background field. In the pure gauge case our finite size scaling analysis is in agreement with the well known presence of a weak first order phase transition. In the case of 2 flavors full QCD we find, using the standard pure gauge and staggered fermion actions, that the phase transition is consistent with weak first order, contrary to the expectation of a crossover for not too large quark masses and in agreement with results obtained by the Pisa group.

23 pages, 11 figures, 4 tables (minor typos corrected, references updated, accepted for publication on JHEP)

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• Flux tubes in the QCD vacuum
• Chromoelectric flux tubes in QCD
• Flux tubes at finite temperature
• Dual superconductivity and vacuum properties in Yang--Mills theories
• Color Dynamics in External Fields
• QCD dynamics in a constant chromomagnetic field
• The Maximal Abelian Gauge in SU(N) Gauge Theories and Thermal Monopoles for N = 3
• Color confinement and dual superconductivity of the vacuum. IV
• A finite temperature investigation of dual superconductivity in the modified SO(3) lattice gauge theory
• Chiral Symmetry Breaking in Planar QED in External Magnetic Fields
• Equation of State for Spin Systems with Goldstone Bosons: the 3d O(4) Case
• Confining properties of QCD at finite temperature and density
• Direct numerical computation of disorder parameters
• Dual Meissner Effect and Quark Confinement Potential in S U(3) Dual QCD Formalism
• N${}_f$ = 1 QCD in External Magnetic Fields: Staggered Fermions
• External Fields and Color Confinement
• Chiral transition and deconfinement in N_f = 2 QCD