Published February 2004 | Version v1
Journal article Metadata-only

Bulk viscosity in neutron stars from hyperons

Creators

  • 1. Theory Group, Kernfysisch Versneller Instituut, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen (Netherlands)

Description

The contribution from hyperons to the bulk viscosity of neutron star matter is calculated. Compared to previous works we use for the weak interaction the one-pion exchange model rather than a current-current interaction, and include the neutral current nn↔nΛ process. Also the sensitivity to details of the equation of state is examined. Compared to previous works we find that the contribution from hyperons to the bulk viscosity is about two orders of magnitude smaller

Additional details

Identifiers

DOI
10.1103/PhysRevC.69.025802;
arXiv
arXiv:nucl-th/0311103v1;

Publishing Information

Journal Title
Physical Review. C, Nuclear Physics
Journal Volume
69
Journal Issue
2
Journal Page Range
p. 025802-025802.8
ISSN
0556-2813
CODEN
PRVCAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36023416
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
COMPARATIVE EVALUATIONS; EQUATIONS OF STATE; LAMBDA BARYONS; NEUTRAL CURRENTS; NEUTRON STARS; NUCLEAR MATTER; OPE MODEL; SIGMA BARYONS; VISCOSITY; WEAK INTERACTIONS; XI BARYONS
Descriptors DEC
ALGEBRAIC CURRENTS; BARYONS; BASIC INTERACTIONS; BOSON-EXCHANGE MODELS; CURRENTS; ELEMENTARY PARTICLES; EQUATIONS; EVALUATION; FERMIONS; HADRONS; HYPERONS; INTERACTIONS; MATHEMATICAL MODELS; MATTER; OBE MODEL; PARTICLE MODELS; PERIPHERAL MODELS; STARS; STRANGE PARTICLES

Optional Information

Notes
(c) 2004 The American Physical Society