Artigo
Shear viscosity due to Landau damping from the quark-pion interaction
Registro en:
Physical Review C. College Pk: Amer Physical Soc, v. 88, n. 6, 5 p., 2013.
0556-2813
10.1103/PhysRevC.88.068201
WOS:000328581100004
WOS000328581100004.pdf
Autor
Ghosh, Sabyasachi [UNESP]
Lahiri, Anirban
Majumder, Sarbani
Ray, Rajarshi
Ghosh, Sanjay K.
Resumen
We have calculated the shear viscosity coefficient eta of the strongly interacting matter in the relaxation time approximation, where a quasiparticle description of quarks with their dynamical masses is considered from the Nambu-Jona-Lasinio model. Due to the thermodynamic scattering of quarks with pseudoscalar-type condensate (i.e., pion), a nonzero Landau damping will be acquired by the propagating quarks. This Landau damping may be obtained from the Landau cut contribution of the in-medium self-energy of a quark-pion loop, which is evaluated in the framework of real-time thermal field theory. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata 700091, India Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil FAPESP: 12/16766-0