Title: Thermal chiral vortical and magnetic waves: New excitation modes in chiral fluids

Abstract

In certain circumstances, chiral (parity-violating) medium can be described hydrodynamically as a chiral fluid with microscopic quantum anomalies. Possible examples of such systems include strongly coupled quark–gluon plasma, liquid helium ³He-A, neutron stars and the Early Universe. Here, we study first-order hy-drodynamics of a chiral fluid on a vortex background and in an external magnetic field. We show that there are two previously undiscovered modes describing heat waves propagating along the vortex and magnetic field. We call them the Thermal Chiral Vortical Wave and Thermal Chiral Magnetic Wave. We also identify known gapless excitations of density (chiral vortical and chiral magnetic waves) and transverse velocity (chiral Alfvén wave). We also demonstrate that the velocity of the chiral vortical wave is zero, when the full hydrodynamic framework is applied, and hence the wave is absent and the excitation reduces to the charge diffusion mode. We also comment on the frame-dependent contributions to the obtained propagation velocities.

Authors:

Kalaydzhyan, Tigran; Murchikova, Elena

Publication Date:

Thu Jun 01 00:00:00 EDT 2017

Research Org.:

Univ. of Illinois, Chicago, IL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1348017

Alternate Identifier(s):

OSTI ID: 1374979

Grant/Contract Number:  

FG0201ER41195; FG02-01ER41195

Resource Type:

Published Article

Journal Name:

Nuclear Physics. B

Additional Journal Information:

Journal Name: Nuclear Physics. B Journal Volume: 919 Journal Issue: C; Journal ID: ISSN 0550-3213

Publisher:

Elsevier

Country of Publication:

Netherlands

Language:

English

Subject:

73 NUCLEAR PHYSICS AND RADIATION PHYSICS