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Neutrino emissivities and bulk viscosity in neutral two-flavor quark matter

Berdermann, Jens and Blaschke, David and Fischer, Tobias and Kachanovich, Alaksiej (2016) Neutrino emissivities and bulk viscosity in neutral two-flavor quark matter. Physical Review D : Particles, Fields, Gravitation and Cosmology, D94, p. 123010. American Physical Society. DOI: 10.1103/PhysRevD.94.123010 ISSN 1550-7998

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Abstract

We study thermodynamic and transport properties for the isotropic color-spin-locking (iso-CSL) phase of two-flavor superconducting quark matter under compact star constraints within a NJL-type chiral quark model. Chiral symmetry breaking and the phase transition to superconducting quark matter leads to a density dependent change of quark masses, chemical potentials and diquark gap. A self-consistent treatment of these physical quantities influences on the microscopic calculations of transport properties. We present results for the iso-CSL direct URCA emissivities and bulk viscosities, which fulfill the constraints on quark matter derived from cooling and rotational evolution of compact stars. We compare our results with the phenomenologically successful, but yet heuristic 2SC+X phase. We show that the microscopically founded iso-CSL phase can replace the purely phenomenological 2SC+X phase in modern simulations of the cooling evolution for compact stars with color superconducting quark matter interior.

Item URL in elib:https://elib.dlr.de/108515/
Document Type:Article
Title:Neutrino emissivities and bulk viscosity in neutral two-flavor quark matter
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Berdermann, JensJens.Berdermann (at) dlr.dehttps://orcid.org/0000-0002-3308-4584
Blaschke, Davidblaschke (at) ift.uni.wroc.plUNSPECIFIED
Fischer, Tobiasfischer (at) ift.uni.wroc.plUNSPECIFIED
Kachanovich, Alaksiejakachanovich (at) ift.uni.wroc.plUNSPECIFIED
Date:16 December 2016
Journal or Publication Title:Physical Review D : Particles, Fields, Gravitation and Cosmology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:D94
DOI :10.1103/PhysRevD.94.123010
Page Range:p. 123010
Publisher:American Physical Society
Series Name:Physical Review
ISSN:1550-7998
Status:Published
Keywords:quark matter, emissivities, chiral symmetry, compact stars
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Ionosphäre
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation
Deposited By: Berdermann, Dr Jens
Deposited On:29 Nov 2016 11:35
Last Modified:08 Mar 2018 18:37

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