5 papers
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…
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…
Quantum dissipative effects for a real scalar field coupled to a dynamical Neumann surface in d+1 dimensions
C. D. Fosco, B. C. Guntsche
We study dissipative effects for a system consisting of a massless real scalar field satisfying Neumann boundary conditions on a space and time-dependent surface, in d+1 dimensions…
Quantum dissipative effects for a real scalar field coupled to a time-dependent Dirichlet surface in d+1 dimensions
B. C. Guntsche, C. D. Fosco
We study the Dynamical Casimir Effect (DCE) for a real scalar field in dimensions, in the presence of a mirror that imposes Dirichlet boundary conditions and undergoes ti…
No-go theorem for static spherically symmetric configurations composed of two charged pressureless fluid species
Andrés Aceña, Bruno Cardin Guntsche, Ivan Gentile de Austria
We present a no-go theorem for spherically symmetric configurations of two charged fluid species in equilibrium. The fluid species are assumed to be dusts, that is, perfect fluids…