Thermal chiral vortical and magnetic waves: New excitation modes in chiral fluids
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.
- Research Organization:
- Univ. of Illinois, Chicago, IL (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FG0201ER41195; FG02-01ER41195
- OSTI ID:
- 1348017
- Alternate ID(s):
- OSTI ID: 1374979
- Journal Information:
- Nuclear Physics. B, Journal Name: Nuclear Physics. B Vol. 919 Journal Issue: C; ISSN 0550-3213
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
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