Direct Urca neutrino rate in color superconducting quark matter.

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Phys. Rev. C

DOI:https://doi.org/10.1103/PhysRevC.73.042801· OSTI ID:953442

Jaikumar, P; Roberts, C D; Sedrakian, A

If deconfined quark matter exists inside compact stars, the primary cooling mechanism is neutrino radiation via the direct Urca processes d {yields} u + e + {bar {nu}}{sub e} and U + e {yields} d + {nu}{sub e}. Below a critical temperature, T{sub c}, quark matter forms a color superconductor, one possible manifestation of which is a condensate of <ud> quark Cooper pairs in an electric-charge neutralizing background of electrons. We compute the neutrino emission rate from such a phase, including charged pair-breaking and recombination effects, and find that on a material temperature domain below T{sub c} the pairing-induced suppression of the neutrino emission rate is not uniformly exponential. If gapless modes are present in the condensed phase, the emissivity at low temperatures is moderately enhanced above that of completely unpaired matter. The importance of charged current pair-breaking processes for neutrino emission both in the fully gapped and partially gapped regimes is emphasized.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC); National Science Foundation (NSF); FOR
• DOE Contract Number: DE-AC02-06CH11357
• OSTI ID: 953442
• Report Number(s): ANL/PHY/JA-54523; PRVCAN; TRN: US0902764
• Journal Information: Phys. Rev. C, Vol. 73, Issue 4 ; 2006; ISSN 0556-2813
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHARGED CURRENTS
COLOR
CONDENSATES
COOPER PAIRS
CRITICAL TEMPERATURE
ELECTRONS
EMISSIVITY
NEUTRINOS
QUARK MATTER
QUARKS
RADIATIONS
RECOMBINATION
STARS