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hep-th2026
Covariant extrinsic curvature expansion of the nonlocal effective action for a massless scalar field on a manifold with boundary
A. Boasso, C. D. Fosco, B. C. Guntsche +1
We study the nonlocal effective action of a massless scalar field defined on a flat manifold with a curved boundary. Using a heat-kernel approach, we derive a covariant expansion o…
hep-th2026
Dynamical Casimir effect in the worldline formulation
C. D. Fosco, B. C. Guntsche
We evaluate the effective action for the Dynamical Casimir Effect (DCE) for a real scalar field in dimensions within the worldline formulation of quantum field theory. The sc…