https://scholars.lib.ntu.edu.tw/handle/123456789/614635
標題: | Minimum shear viscosity over entropy density at phase transition?-A counterexample | 作者: | CHANG-TSE HSIEH JIUNN-WEI CHEN |
關鍵字: | Finite temperature field theory; O(N) model; Transport coefficients | 公開日期: | 2011 | 卷: | 701 | 期: | 3 | 起(迄)頁: | 327-331 | 來源出版物: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | 摘要: | 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. © 2011 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-79960349293&doi=10.1016%2fj.physletb.2011.05.066&partnerID=40&md5=7b623d3dd2b6183050eec9c0126ce445 https://scholars.lib.ntu.edu.tw/handle/123456789/614635 |
ISSN: | 03702693 | 其他識別: | PYLBA | DOI: | 10.1016/j.physletb.2011.05.066 |
顯示於: | 物理學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。