Abstract
We compute and discuss the temperature-dependence of the shear viscosity, focusing on that around the critical point, using the Nambu–Jona-Lasinio model in the leading order of 1/Nc expansion and the chiral limit. Our calculation is based on a systematic resummation method of the singular diagrams, developed recently by the present authors. In the leading order of the theory, 2 → 2 scattering between quark-quark, antiquark-antiquark and quark-antiquark contributes to the shear viscosity. The ratio of the shear viscosity to the entropy, η/s, decreases as temperature increases, only with a tiny cusp at T = Tc.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
