The Gravitational Chiral Anomaly at Finite Temperature and Density

2024/04/09 by Corianò, Claudio, Cretì, Mario, Lionetti, Stefano +1 · 1 citation
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)

paper · doi:10.48550/arxiv.2404.06272

Abstract

We investigate the gravitational anomaly vertex ⟨ TTJ₅⟩ (graviton - graviton - axial current) under conditions of finite density and temperature. Through a direct analysis of perturbative contributions, we demonstrate that neither finite temperature nor finite fermion density affects the gravitational chiral anomaly. These results find application in several contexts, from topological materials to the early universe plasma. They affect the decay of any axion or axion-like particle into gravitational waves, in very dense and hot environments.

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• Examining the Anomalous Nature of Chiral Effects in Thermodynamics

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