Quark beta decay in the inhomogeneous chiral phase and cooling of compact stars

Abstract

A novel cooling mechanism is proposed for neutron stars, based on the recent development in the studies of the QCD phase diagram. Possible appearance of the inhomogeneous chiral phase makes the quark beta decay without gluonic interaction. An estimate of the neutrino emissivity shows the order of $10^{24-26}(T/10^9{)}^6$(erg cm${}^{-3}$ s${}^{-1}$) near the phase boundaries, whose efficiency is comparable with the usual quark cooling or pion cooling, but it works only in the limited density region. These features may give another cooling scenario of neutron stars.

13 pages, 3 figures

References in corpus (7)

• Inhomogeneous phases in the Nambu-Jona-Lasino and quark-meson model
• Self-consistent crystalline condensate in chiral Gross-Neveu and Bogoliubov-de Gennes systems
• A Twisted Kink Crystal in the Chiral Gross-Neveu model
• Chiral Magnetic Spiral
• Larkin-Ovchinnikov state in resonant Fermi gas
• Chiral density waves in the NJL${}_2$ model with quark number and isospin chemical potentials
• Comparison of the non-uniform chiral and 2SC phases at finite temperatures and densities

Cited by in corpus (6)

• Inhomogeneous charged pion condensation in chiral asymmetric dense quark matter in the framework of NJL${}_2$ model
• Dualities and inhomogeneous phases in dense quark matter with chiral and isospin imbalances in framework of effective model
• Competition and duality correspondence between inhomogeneous fermion-antifermion and fermion-fermion condensations in the NJL${}_2$ model
• Dual chiral density wave induced oscillating Casimir effect
• Gradient expansion technique for inhomogeneous, magnetized quark matter
• Neutrino emission and initial evolution of axionic quark nuggets