4.7 Article

Holographic chiral shear waves from anomaly

期刊

PHYSICS LETTERS B
卷 689, 期 4-5, 页码 206-212

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ELSEVIER
DOI: 10.1016/j.physletb.2010.04.076

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Chiral shear waves; Holographic hydrodynamics; Triangle anomaly

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We study dispersion relations of hydrodynamic waves of hot N = 4 SYM plasma at strong coupling with a finite U(1) R-charge chemical potential via holography. We first provide complete equations of motion of linearized fluctuations out of a charged AdS black-hole background according to their helicity, and observe that helicity +/- 1 transverse shear modes receive a new parity-odd contribution from the 5D Chern-Simons term, which is dual to 4D U(1)(3) anomaly. We present a systematic solution of the helicity +/- 1 wave equations in long wave-length expansion, and obtain the corresponding dispersion relations. The results depend on the sign of helicity, which may be called chiral shear waves. (C) 2010 Elsevier B.V. All rights reserved.

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