Transport properties of a meson gas

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dc.creatorFernandez-Fraile, D.
dc.creatorNicola, A. Gomez
dc.date2007-06-25
dc.date2007-07-09
dc.date.accessioned2026-07-07T13:03:59Z
dc.date.available2026-07-07T13:03:59Z
dc.descriptionWe present recent results on a systematic method to calculate transport coefficients for a meson gas (in particular, we analyze a pion gas) at low temperatures in the context of Chiral Perturbation Theory. Our method is based on the study of Feynman diagrams with a power counting which takes into account collisions in the plasma by means of a non-zero particle width. In this way, we obtain results compatible with analysis of Kinetic Theory with just the leading order diagram. We show the behavior with temperature of electrical and thermal conductivities and shear and bulk viscosities, and we discuss the fundamental role played by unitarity. We obtain that bulk viscosity is negligible against shear viscosity near the chiral phase transition. Relations between the different transport coefficients and bounds on them based on different theoretical approximations are also discussed. We also comment on some applications to heavy-ion collisions.
dc.description4 pages, 4 figures, IJMPE style. Contribution to the International Workshop X Hadron Physics (2007), Florianopolis, Brazil. Accepted for publication in IJMPE; 1 typo corrected
dc.identifierhttps://arxiv.org/abs/0706.3561
dc.identifierhttp://arxiv.org/abs/0706.3561
dc.identifierInt.J.Mod.Phys.E16:3010-3013,2007
dc.identifierdoi:10.1142/S0218301307008938
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/227000
dc.subjectHigh Energy Physics - Phenomenology
dc.titleTransport properties of a meson gas
dc.typetext

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