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Neutrino emission from compact stars and inhomogeneous color superconductivity

Research paper by R. Anglani, M. Mannarelli, G. Nardulli, M. Ruggieri

Indexed on: 25 Sep '06Published on: 25 Sep '06Published in: High Energy Physics - Phenomenology



Abstract

We discuss specific heat and neutrino emissivity due to direct Urca processes for quark matter in the color superconductive Larkin-Ovchinnikov-Fulde-Ferrell (LOFF) phase of Quantum-Chromodynamics. We assume that the three light quarks $u, d, s$ are in a color and electrically neutral state and interact by a four fermion Nambu-Jona Lasinio coupling. We study a LOFF state characterized by a single plane wave for each pairing. From the evaluation of neutrino emissivity and fermionic specific heat, the cooling rate of simplified models of compact stars with a quark core in the LOFF state is estimated.