@Article{Agullo_etal2017,
author="Agullo, I.
and del Rio, A.
and Navarro-Salas, J.",
title="Electromagnetic Duality Anomaly in Curved Spacetimes",
journal="Physical Review Letters",
year="2017",
publisher="Amer Physical Soc",
volume="118",
number="11",
pages="111301--5pp",
abstract="The source-free Maxwell action is invariant under electric-magnetic duality rotations in arbitrary spacetimes. This leads to a conserved classical Noether charge. We show that this conservation law is broken at the quantum level in the presence of a background classical gravitational field with a nontrivial Chern-Pontryagin invariant, in parallel with the chiral anomaly for massless Dirac fermions. Among the physical consequences, the net polarization of the quantum electromagnetic field is not conserved.",
optnote="WOS:000396267100003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2964), last updated on Thu, 23 Mar 2017 11:08:43 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.118.111301",
opturl="http://arxiv.org/abs/1607.08879",
opturl="https://doi.org/10.1103/PhysRevLett.118.111301",
archivePrefix="arXiv",
eprint="1607.08879",
language="English"
}