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 , , 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.
- Received 1 August 2006
DOI:https://doi.org/10.1103/PhysRevD.74.074005
©2006 American Physical Society