Estimating transport coefficients of interacting pion gas with K-matrix cross sections

Estimating transport coefficients of interacting pion gas with K-matrix cross sections

We estimate the transport coefficients, viz., shear and bulk viscosities as well as thermal and electrical conductivities, of hot pionic matter using a relativistic Boltzmann equation in a relaxation time approximation. We use K-matrix parametrization of pion-pion cross sections to estimate the tran...

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Veröffentlicht in:Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2019-01, Vol.46 (1), p.15102
Hauptverfasser: Kadam, Guruprasad, Pawar, Swapnali, Mishra, Hiranmaya
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Sprache:eng
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K-matrix
pion gas
transport coefficients
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creator Kadam, Guruprasad
Pawar, Swapnali
Mishra, Hiranmaya
description We estimate the transport coefficients, viz., shear and bulk viscosities as well as thermal and electrical conductivities, of hot pionic matter using a relativistic Boltzmann equation in a relaxation time approximation. We use K-matrix parametrization of pion-pion cross sections to estimate the transport coefficients which incorporate multiple heavy resonances while simultaneously preserving the unitarity of the S-matrix. We compare transport coefficients estimated using K-matrix parametrization with the existing literature on pionic transport coefficients. We find that the K-matrix scheme estimations are in reasonable agreement with previous results.
doi_str_mv 10.1088/1361-6471/aaeba2
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subjects K-matrix
pion gas
transport coefficients
title Estimating transport coefficients of interacting pion gas with K-matrix cross sections
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