Effects from inhomogeneities in the chiral transition

Abstract

We consider an approximation procedure to evaluate the finite-temperature one-loop fermionic density in the presence of a chiral background field which systematically incorporates effects from inhomogeneities in the chiral field through a derivative expansion. We apply the method to the case of a simple low-energy effective chiral model which is commonly used in the study of the chiral phase transition, the linear sigma-model coupled to quarks. The modifications in the effective potential and their consequences for the bubble nucleation process are discussed.

11 pages, 5 figures. v2: appendix and references added, published version

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• Droplets in the cold and dense linear sigma model with quarks
• Chiral transition in a finite system and possible use of finite size scaling in relativistic heavy ion collisions
• CP violation and chiral symmetry restoration in the hot linear sigma model in a strong magnetic background
• Phase conversion in a weakly first-order quark-hadron transition
• Thermal chiral and deconfining transitions in the presence of a magnetic background
• Nucleating quark droplets in the core of magnetars
• Search for fingerprints of disoriented chiral condensates in cosmic ray showers