%0 Journal Article
%T Torque Anomaly in Quantum Field Theory
%A S. A. Fulling
%A F. D. Mera
%A C. S. Trendafilova
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevD.87.047702
%X The expectation values of energy density and pressure of a quantum field inside a wedge-shaped region appear to violate the expected relationship between torque and total energy as a function of angle. In particular, this is true of the well-known Deutsch--Candelas stress tensor for the electromagnetic field, whose definition requires no regularization except possibly at the vertex. Unlike a similar anomaly in the pressure exerted by a reflecting boundary against a perpendicular wall, this problem cannot be dismissed as an artifact of an ad hoc regularization.
%U http://arxiv.org/abs/1212.6249v1