Δ self-energy at finite temperature and density and the πN cross section

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dc.contributor.author Ghosh, Snigdha
dc.contributor.author Sarkar, Sourav
dc.contributor.author Mitra, Sukanya
dc.date.accessioned 2017-04-18T10:49:44Z
dc.date.available 2017-04-18T10:49:44Z
dc.date.issued 2017-03
dc.identifier.citation Ghosh, Snigdha; Sarkar, Sourav and Mitra, Sukanya, “Δ self-energy at finite temperature and density and the πN cross section”, Physical Review D, DOI: 10.1103/PhysRevD.95.056010, vol. 55, no. 5, Mar. 2017. en_US
dc.identifier.issn 2470-0010
dc.identifier.issn 2470-0029
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2874
dc.identifier.uri http://dx.doi.org/10.1103/PhysRevD.95.056010
dc.description.abstract The self-energy of the Δ baryon is evaluated at a finite temperature and density using the real-time formalism of thermal field theory. The Dyson-Schwinger equation is used to get the exact thermal propagator followed by the spectral function of Δ . The π N scattering cross section obtained using an explicit Δ exchange is normalized to the experimental data in the vacuum, and its medium modification is implemented by means of the exact thermal propagator. A significant suppression of the peak of the cross section is observed at a higher temperature and baryon density. Effects on the mean relaxation time of nucleons and the temperature dependence of the shear viscosity of a pion nucleon gas are demonstrated. en_US
dc.description.statementofresponsibility by Snigdha Ghosh, Sourav Sarkar and Sukanya Mitra
dc.format.extent Vol. 55, no. 5
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.title Δ self-energy at finite temperature and density and the πN cross section en_US
dc.type Article en_US
dc.relation.journal Physical Review D


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