3 papers
hep-th2025
Non-perturbative corrections to the Casimir energy for a scalar field theory with non-linear boundary conditions
Fabrizio Canfora, David Dudal, Thomas Oosthuyse +3
We consider the case of a free real massive bulk scalar in D=4 dimensions, and embed two parallel plates as interfaces on which we impose non-linear boundary conditions, either Dir…
hep-th2025
Dynamical edge modes in Maxwell theory from a BRST perspective, with an application to the Casimir energy
Fabrizio Canfora, David Dudal, Thomas Oosthuyse +2
Recently, dynamical edge modes (DEM) in Maxwell theory have been constructed using a specific local boundary condition on the horizon. We discuss how to enforce this boundary condi…
hep-th2024
The Equivalence Theorem at work: manifestly gauge-invariant Abelian Higgs model physics
Bram Boeykens, David Dudal, Thomas Oosthuyse
We reconsider the Equivalence Theorem from an algebraic viewpoint, using an extended BRST symmetry. This version of the Equivalence Theorem is then used to reexpress the Abelian Hi…