Shear viscosity of a pion gas resulting from ρππ and σππ interactions
| dc.contributor.author | Ghosh, Sabyasachi [UNESP] | |
| dc.contributor.author | Krein, Gastão [UNESP] | |
| dc.contributor.author | Sarkar, Sourav | |
| dc.contributor.institution | Universidade Estadual Paulista (UNESP) | |
| dc.contributor.institution | Variable Energy Cyclotron Centre | |
| dc.date.accessioned | 2022-04-29T07:14:49Z | |
| dc.date.available | 2022-04-29T07:14:49Z | |
| dc.date.issued | 2014-04-02 | |
| dc.description.abstract | We have evaluated the shear viscosity of pion gas with vanishing chemical potential taking into account its scattering with the low mass resonances σ and ρ during propagation in the medium. The thermal width (or collisional rate) of pions is calculated from πσ and πρ loop diagrams using effective interactions in the real-time formulation of finite temperature field theory. A very small value of shear viscosity by entropy density ratio (η/s), close to the quantum bound, is obtained which approximately matches the range of values of η/s used by Niemi et al. [H. Niemi, G. S. Denicol, P. Huovinen, E. Molnár, and D. H. Rischke, Phys. Rev. Lett. 106, 212302 (2011)PRLTAO0031-900710.1103/PhysRevLett.106.212302; Phys. Rev. C 86, 014909 (2012)PRVCAN0556-281310.1103/PhysRevC.86.014909] to fit the elliptic flow data from the Relativistic Heavy Ion Collider. © 2014 American Physical Society. | en |
| dc.description.affiliation | Instituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271, 01140-070, São Paulo, São Paulo | |
| dc.description.affiliation | Theoretical Physics Division Variable Energy Cyclotron Centre, 1/AF Bidhannagar, Kolkata 700064 | |
| dc.description.affiliationUnesp | Instituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271, 01140-070, São Paulo, São Paulo | |
| dc.identifier | http://dx.doi.org/10.1103/PhysRevC.89.045201 | |
| dc.identifier.citation | Physical Review C - Nuclear Physics, v. 89, n. 4, 2014. | |
| dc.identifier.doi | 10.1103/PhysRevC.89.045201 | |
| dc.identifier.issn | 1089-490X | |
| dc.identifier.issn | 0556-2813 | |
| dc.identifier.scopus | 2-s2.0-84899671251 | |
| dc.identifier.uri | http://hdl.handle.net/11449/227719 | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Physical Review C - Nuclear Physics | |
| dc.source | Scopus | |
| dc.title | Shear viscosity of a pion gas resulting from ρππ and σππ interactions | en |
| dc.type | Artigo |