QCD Phase Transition in a Strong Magnetic Background

May, 2010
6 pages
Published in:
  • Phys.Rev.D 82 (2010) 051501
e-Print:

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Abstract: (arXiv)
We investigate the properties of the deconfining/chiral restoring transition for two flavor QCD in presence of a uniform background magnetic field. We adopt a standard staggered discretization of the fermion action and a lattice spacing of the order of 0.3 fm. We explore different values of the bare quark mass, corresponding to pion masses in the range 200 - 480 MeV, and magnetic fields up to |e|B ~ 0.75 GeV^2. The deconfinement and chiral symmetry restoration temperatures remain compatible with each other and rise very slightly (< 2 % for our largest magnetic field) as a function of the magnetic field. On the other hand, the transition seems to become sharper as the magnetic field increases.
Note:
  • 5 pages, 8 figures. References and figures updated. Matches the published version
  • 12.38.Gc
  • 12.38.Aw
  • 11.15.Ha
  • flavor: 2
  • quantum chromodynamics: critical phenomena
  • magnetic field: background
  • symmetry: chiral
  • quark: mass
  • pi: mass
  • deconfinement