Vanishing bulk viscosities and conformal invariance of the unitary fermi gas

被引：113

作者：

Son, D. T. ^{[1
]}

机构：

[1] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.98.020604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By requiring general-coordinate and conformal invariance of the hydrodynamic equations, we show that the unitary Fermi gas has zero bulk viscosity, zeta = 0, in the normal phase. In the superfluid phase, two of the bulk viscosities have to vanish, zeta(1) = zeta(2) = 0, while the third one zeta(3) is allowed to be nonzero.

引用

页数：4

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