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- Title
Viscous coefficients and thermal conductivity of a πKN gas mixture in the medium.
- Authors
Kalikotay, Pallavi; Chaudhuri, Nilanjan; Ghosh, Snigdha; Gangopadhyaya, Utsab; Sarkar, Sourav
- Abstract
The temperature and density dependence of the relaxation times, thermal conductivity, shear viscosity and bulk viscosity for a hot and dense gas consisting of pions, kaons and nucleons have been evaluated in the kinetic theory approach. The in-medium cross-sections for π π , π K and π N scatterings were obtained by using complete propagators for the exchanged ρ , σ , K ∗ and Δ excitations derived using thermal field theoretic techniques. Notable deviations can be observed in the temperature dependence of η , ζ and λ when compared with corresponding calculations using vacuum cross-sections usually employed in the literature. The value of the specific shear viscosity η / s is found to be in agreement with available estimates.
- Subjects
BULK viscosity; GAS mixtures; THERMAL conductivity; PARTICLES (Nuclear physics); VACUUM; VISCOSITY
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2020, Vol 56, Issue 3, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-020-00074-3