Emergent anomaly of Fermi surfaces: a simple derivation from Weyl fermions

2021/10/18 by Ma, Ruochen, Wang, Chong
#FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Strongly Correlated Electrons (cond-mat.str-el)

paper · doi:10.48550/arxiv.2110.09492

Abstract

The Fermi liquid has an emergent low-energy symmetry that corresponds to charge conservation at each momentum on the Ferm surface. Recently Else, Thorngren and Senthil (ETS) argued that the emergent symmetry had a specific t'Hooft anomaly. We give a simple derivation of the ETS anomaly using the chiral anomaly of Weyl fermions.

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