Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10722803 | Physics Letters B | 2011 | 5 Pages |
Abstract
The ratio η/s, shear viscosity (η) to entropy density (s), reaches its local minimum at the (second order) phase transition temperature in a wide class of systems. It was suspected that this behavior might be universal. However, a counterexample is found in a system of two weakly self-interacting real scalar fields with one of them condensing at low temperatures while the other remains in the symmetric phase. There is no interaction between the two fields. In our mean field analysis the resulting η/s is monotonically decreasing in temperature despite the second order phase transition.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Jiunn-Wei Chen, Chang-Tse Hsieh, Han-Hsin Lin,