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Phase transitions and perfectness of fluids in weakly coupled real scalar field theories
Chen, JW; Huang M(黄梅); Huang, M; Li, YH; Nakano, E; Yang, DL
2008
发表期刊PHYSICS LETTERS B
卷号670期号:1页码:#REF!
通讯作者Chen, JW (reprint author), Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan.
文章类型Article
摘要We calculate the ratio eta/s, the shear viscosity (eta) to entropy density (s), which characterizes how perfect a fluid is, in weakly coupled real scalar field theories with different types of phase transitions. The mean-field results of the eta/s behaviors agree with the empirical observations in atomic and molecular systems such as H(2)O, He, N, and all the matters with data available in the NIST database. These behaviors are expected to be the same in N component scalar theories with an O(N) symmetry. We speculate these eta/s behaviors are general properties of fluid shared by QCD and cold atoms. Finally, we clarify some issues regarding counterexamples of the conjectured universal bound eta/s >= 1/4 pi found in Refs. [T.D. Cohen, Phys. Rev. Lett. 99 (2007) 021602, hep-th/0702136; A. Cherman, TD. Cohen, RM. Hohler, arXiv: 0708.4201 [hep-th]; A. Dobado, F.J. Llanes-Estrada, Eur. Phys. J. C 51 (2007) 913, hep-th/0703132] (C) 2008 Elsevier B.V. All rights reserved.
学科领域Physics
DOI10.1016/j.physletb.2008.10.024
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000261631900004
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被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225531
专题理论物理室
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Chen, JW,Huang M,Huang, M,et al. Phase transitions and perfectness of fluids in weakly coupled real scalar field theories[J]. PHYSICS LETTERS B,2008,670(1):#REF!.
APA Chen, JW,黄梅,Huang, M,Li, YH,Nakano, E,&Yang, DL.(2008).Phase transitions and perfectness of fluids in weakly coupled real scalar field theories.PHYSICS LETTERS B,670(1),#REF!.
MLA Chen, JW,et al."Phase transitions and perfectness of fluids in weakly coupled real scalar field theories".PHYSICS LETTERS B 670.1(2008):#REF!.
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