| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo - Brazil
[2] Ctr Variable Energy Cyclotron, Div Theoret Phys, Kolkata 700064 - India
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Physical Review C; v. 89, n. 4 APR 2 2014. |
| Web of Science Citations: | 9 |
| Abstract | |
We have evaluated the shear viscosity of pion gas with vanishing chemical potential taking into account its scattering with the low mass resonances sigma and rho during propagation in the medium. The thermal width (or collisional rate) of pions is calculated from pi sigma and pi rho 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 (eta/s), close to the quantum bound, is obtained which approximately matches the range of values eta/s used by Niemi et al. {[}H. Niemi, G. S. Denicol, P. Huovinen, E. Molnar, and D. H. Rischke, Phys. Rev. Lett. 106, 212302 (2011); Phys. Rev. C 86, 014909 (2012)] to fit the elliptic flow data from the Relativistic Heavy Ion Collider. (AU) | |
| FAPESP's process: | 13/01907-0 - São Paulo Research and Analysis Center |
| Grantee: | Sergio Ferraz Novaes |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/16766-0 - Spectral and transport properties of charmed mesons in hot and dense hadronic matter |
| Grantee: | Sabyasachi Ghosh |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 09/50180-0 - Study of hadronic interactions at high energies |
| Grantee: | Yogiro Hama |
| Support Opportunities: | Research Projects - Thematic Grants |