Published March 2007 | Version v1
Journal article Metadata-only

The ratio of viscosity to entropy density in a pion gas satisfies the KSS holographic bound

Creators

  • 1. Universidad Complutense, Departamento de Fisica Teorica I, Madrid (Spain)

Description

We evaluate the ratio of shear viscosity to entropy density in a pion gas employing the Uehling-Uehlenbeck equation and experimental phase-shifts parameterized by means of the SU(2) inverse amplitude method. We find that the ratio for this monocomponent gas stays well above the KSS 1/(4π) bound. We find similar results with other sets of phase-shifts and conclude that the bound is nowhere violated. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s10052-006-0176-4

Additional details

Identifiers

DOI
10.1140/epjc/s10052-006-0176-4;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
49
Journal Issue
4
Journal Page Range
p. 1011-1013
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
38044103
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
AMPLITUDES; BOSE-EINSTEIN GAS; CHIRALITY; ENTROPY; PERTURBATION THEORY; PHASE SHIFT; PIONS; SHEAR PROPERTIES; SU-2 GROUPS; TEMPERATURE DEPENDENCE; VISCOSITY
Descriptors DEC
BOSONS; ELEMENTARY PARTICLES; HADRONS; LIE GROUPS; MECHANICAL PROPERTIES; MESONS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; PSEUDOSCALAR MESONS; SU GROUPS; SYMMETRY GROUPS; THERMODYNAMIC PROPERTIES