Bulk viscosity of strange quark matter: Urca versus nonleptonic processes

Basil A. Sa'd; Igor A. Shovkovy; Dirk H. Rischke

doi:10.1103/PhysRevD.75.125004

Bulk viscosity of strange quark matter: Urca versus nonleptonic processes

Basil A. Sa'd, Igor A. Shovkovy, Dirk H. Rischke

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

A general formalism for calculating the bulk viscosity of strange quark matter is developed. Contrary to the common belief that the nonleptonic processes alone give the dominant contribution to the bulk viscosity, the inclusion of the Urca processes is shown to play an important role at intermediate densities when the characteristic r-mode oscillation frequencies are not too high. The interplay of nonleptonic and Urca processes is analyzed in detail.

Original language	English (US)
Article number	125004
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	75
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.75.125004
State	Published - Jun 4 2007
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.75.125004

Cite this

@article{6961b76c38f34d3793726866fc4d580b,

title = "Bulk viscosity of strange quark matter: Urca versus nonleptonic processes",

abstract = "A general formalism for calculating the bulk viscosity of strange quark matter is developed. Contrary to the common belief that the nonleptonic processes alone give the dominant contribution to the bulk viscosity, the inclusion of the Urca processes is shown to play an important role at intermediate densities when the characteristic r-mode oscillation frequencies are not too high. The interplay of nonleptonic and Urca processes is analyzed in detail.",

author = "Sa'd, {Basil A.} and Shovkovy, {Igor A.} and Rischke, {Dirk H.}",

year = "2007",

month = jun,

day = "4",

doi = "10.1103/PhysRevD.75.125004",

language = "English (US)",

volume = "75",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "12",

}

TY - JOUR

T1 - Bulk viscosity of strange quark matter

T2 - Urca versus nonleptonic processes

AU - Sa'd, Basil A.

AU - Shovkovy, Igor A.

AU - Rischke, Dirk H.

PY - 2007/6/4

Y1 - 2007/6/4

N2 - A general formalism for calculating the bulk viscosity of strange quark matter is developed. Contrary to the common belief that the nonleptonic processes alone give the dominant contribution to the bulk viscosity, the inclusion of the Urca processes is shown to play an important role at intermediate densities when the characteristic r-mode oscillation frequencies are not too high. The interplay of nonleptonic and Urca processes is analyzed in detail.

AB - A general formalism for calculating the bulk viscosity of strange quark matter is developed. Contrary to the common belief that the nonleptonic processes alone give the dominant contribution to the bulk viscosity, the inclusion of the Urca processes is shown to play an important role at intermediate densities when the characteristic r-mode oscillation frequencies are not too high. The interplay of nonleptonic and Urca processes is analyzed in detail.

UR - http://www.scopus.com/inward/record.url?scp=34347399280&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34347399280&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.75.125004

DO - 10.1103/PhysRevD.75.125004

M3 - Article

AN - SCOPUS:34347399280

SN - 1550-7998

VL - 75

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 12

M1 - 125004

ER -

Bulk viscosity of strange quark matter: Urca versus nonleptonic processes

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this