Speaker
Mr
Zebin Qiu
(University of Tokyo)
Description
The Casimir effect is relevant for QCD physics in many contexts such as a possible origin of the dark energy, an extra pressure in the hadron bag model etc. In this talk we delve into the Casimir effect in (3+1)-dimensional Maxwell-Chern-Simons (MCS) theory aka axion electrodynamics. It is known that two bodies with reflection symmetry always have an attractive Casimir force, but this ``no-go theorem'' has been challenged recently. We demonstrate that a spatially inhomogeneous topological $\theta$ angle induces a repulsive Casimir force. This is a detectable effect in the topological insulator for which axion electrodynamics is the effective theory.
Primary author
Mr
Zebin Qiu
(University of Tokyo)
