Novel parity violating transport coefficients in 2+1 dimensions from holography

被引：15

作者：

Chen, Jiunn-Wei ^{[1
,2
,3
]}

Dai, Shou-Huang ^{[4
]}

Lee, Nien-En ^{[1
,2
]}

Maity, Debaprasad ^{[1
,2
,3
]}

机构：

[1] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Ctr Theoret Sci, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Leung Ctr Cosmol & Particle Astrophys, Taipei 10617, Taiwan

[4] Natl Taiwan Normal Univ, Dept Phys, Taipei 11677, Taiwan

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2012年 / 09期

关键词：

Gauge-gravity correspondence; AdS-CFT Correspondence; Holography and quark-gluon plasmas; Holography and condensed matter physics (AdS/CMT); QUASI-PARTICLE; GAUGE NONINVARIANCE;

D O I：

10.1007/JHEP09(2012)096

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We construct a 3+1 dimensional holographic model dual to a parity violating hydrodynamic system in 2+1 dimensions. Our model contains gravitational and electrodynamic Chern-Simons terms coupled to a neutral pseudo scalar theta, and a potential composed of quadratic and quartic terms in theta. The background is a charged black brane. We study the hydrodynamics to first order in spacetime derivatives near the probe limit of the pseudo scalar, by extracting the transport coefficients from the scalar, vector, and tensor modes of bulk perturbations. We study two mechanisms for breaking the parity of the boundary fluid: the parity is either spontaneously broken by the nonzero vev of the dual pseudo scalar operator, or by the pseudo scalar source on the boundary. We discover some novel temperature-dependent behaviors of the transport coefficients. It would be interesting to find these behaviors being realized in the real world materials.

引用

页数：32

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