Anomalous gravitomagnetic moment and non-universality of the axial vortical effect at finite temperature

Abstract

The coupling between the spin of a massive Dirac fermion and the angular momentum of the medium, i.e. the gravitomagnetic moment, is shown here to be renormalized by QED interactions at finite temperature. This means that the anomalous gravitomagnetic moment (AGM) does not vanish, and implies that thermal effects can break the Einstein equivalence principle in quantum field theory, as argued previously. We also show that the AGM causes radiative corrections to the axial current of massive fermions induced by vorticity in quantum relativistic fluids, similarly to the previous findings for massless fermions. The radiative QCD effects on the AGM should significantly affect the production of polarized hadrons in heavy-ion collisions.

37 pages, 2 figures; final version published in Phys Rev D

References in corpus (15)

• The Chiral Magnetic Effect
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• Global $\Lambda$ Polarization in high energy collisions
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• A Possible Higher Order Correction to the chiral Vortical Conductivity in a Gauge Field Plasma
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• Relaxation time for the alignment between the spin of a finite-mass quark/antiquark and the thermal vorticity in relativistic heavy-ion collisions
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• Opportunities for new physics searches with heavy ions at colliders
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• Non-perturbative Suppression of Chiral Vortical Effect in Hot (s)QGP for Hyperons Spin Polarization in Heavy Ion Collisions
• Spin-1 quarkonia in a rotating frame and their spin contents
• On chiral vortical effect in accelerated matter
• The strong CP problem, general covariance, and horizons
• Polarization in heavy ion collisions: a theoretical review
• In-medium Electromagnetic Form Factors and Spin Polarizations
• Non-perturbative suppression of Chiral Effects in hot QGP for $\Lambda /\bar{\Lambda }$-hyperons spin polarization in heavy-ion collisions