Speaker
José Javier Hernández Hernández
Description
The introduction of electric and magnetic fields in the QCD vacuum generates topological sectors with a non-zero topological charge. For weak fields, there is a linear response for the topological charge. We study this linear response which can be interpreted as the axion-photon coupling. In this work we use lattice simulations with improved staggered quarks including background electric and magnetic fields.
Authors
Bastian Brandt
(University of Bielefeld)
Francesca Cuteri
(Goethe Universität)
Gergely Endrodi
(University of Bielefeld)
Gergely Marko
(University of Bielefeld)
José Javier Hernández Hernández
