Hot Quark Matter with an Axial Chemical Potential

. The latter is introduced to mimic the chirality transitions induced, in hot Quantum Chromodynamics, by the strong sphaleron configurations. In particular, we study the curvature of the critical line at small

\mu_5

, the effects of a finite quark mass and of a vector interaction. Moreover, we build the mixed phase at the first order phase transition line, and draw the phase diagram in the chiral density and temperature plane. We finally compute the full topological susceptibility in presence of a background of topological charge.

Note:

12 pages, 7 figures. Few references added, short discussion included. Final version appearing on Phys. Rev. D

12.38.Aw
12.38.Mh
potential: chemical
quark: matter
quark: mass
susceptibility: topological
charge: topological
interaction: vector
density: chiral
critical phenomena

References(97)

Figures(8)

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