How does Casimir energy fall? II. Gravitational acceleration of quantum vacuum energy

Understand

It has been demonstrated that quantum vacuum energy gravitates according to the equivalence principle, at least for the finite Casimir energies associated with perfectly conducting parallel plates.

• We here add further support to this conclusion by considering parallel semitransparent plates, that is, delta-function potentials, acting on a massless scalar field, in a spacetime defined by Rindler coordinates (tau,x,y,xi).
• Fixed xi in such a spacetime represents uniform acceleration.
• We calculate the force on systems consisting of one or two such plates at fixed values of xi.