2007/06/30 by Xu-Guang Huang, Xuguang Huang, Qun Wang +1 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #Pulsars and Gravitational Waves Research #astro-ph #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.76.094008
published as Phys.Rev.D76:094008,2007 · 12 pages,6 figures, published version
openalex publication_date 2007/11/05 · arxiv created 2007/11/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study neutrino emission from direct Urca processes in pion condensed quark matter. In compact stars with high baryon density, the emission is dominated by the gapless modes of the pion condensation which leads to an enhanced emissivity. While for massless quarks the enhancement is not remarkable, the emissivity is significantly larger and the cooling of the condensed matter is considerably faster than that in normal quark matter when the mass difference between u and d quarks is sizable.