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arXiv · 1807.05370

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

Guruprasad Kadam·Swapnali Pawar·Hiranmaya Mishra
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Abstract

We estimate the transport coefficients, $viz.$, shear and bulk viscosities as well as thermal and electrical conductivities, of hot pionic matter using relativistic Boltzmann equation in 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 S-matrix. We compare transport coefficients estimated using K-matrix parametrization with existing literature on pionic transport coefficients. We find that the K-matrix scheme estimations are in reasonable agreement with previous results.

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Guruprasad Kadam, Swapnali Pawar, Hiranmaya Mishra. 2018-11-12. Estimating transport coefficients of interacting pion gas with K-matrix cross sections. https://doi.org/10.1088/1361-6471%2Faaeba2

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