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Schwarzschild geometry counterpart in semiclassical gravity
Julio Arrechea, Carlos Barceló, Raúl Carballo-Rubio +1
We investigate the effects of vacuum polarization on vacuum static spherically-symmetric spacetimes. We start from the Polyakov approximation to the renormalized stress-energy tens…
Unitary quantization of a charged scalar field and Schwinger effect
Luis J. Garay, Alberto García Martín-Caro, Mercedes Martín-Benito
Quantum field theory in curved spacetimes suffers in general from an infinite ambiguity in the choice of Fock representation and associated vacuum. In cosmological backgrounds, the…
Gravitational production of scalar dark matter
Jose A. R. Cembranos, Luis J. Garay, Jose M. Sánchez Velázquez
We investigate the gravitational production of scalar dark matter particles during the inflationary and reheating epochs. The oscillatory behavior of the curvature scalar durin…
Semiclassical gravity effects near horizon formation
Carlos Barceló, Valentin Boyanov, Raúl Carballo-Rubio +1
We study the magnitude of semiclassical gravity effects near the formation of a black-hole horizon in spherically-symmetric spacetimes. As a probe for these effects we use a quanti…