Chiral Vortical Effect for Bosons

Abstract

The thermal contribution to the chiral vortical effect is believed to be related to the axial anomaly in external gravitational fields. We use the universality of the spin-gravity interaction to extend this idea to a wider set of phenomena. We consider the Kubo formula at weak coupling for the spin current of a vector field and derive a novel anomalous effect caused by the medium rotation: the chiral vortical effect for bosons. The effect consists in a spin current of vector bosons along the angular velocity of the medium. We argue that it has the same anomalous nature as in the fermionic case and show that this effect provides a mechanism for helicity transfer, from flow helicity to magnetic helicity.

6 pages, 1 figure, version accepted in PRD

References in corpus (5)

• Gravitational Anomaly and Transport
• Relativistic Hydrodynamics with General Anomalous Charges
• Notes on chiral hydrodynamics within effective theory approach
• A Possible Higher Order Correction to the chiral Vortical Conductivity in a Gauge Field Plasma
• Notes on conservation laws in chiral hydrodynamics

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