55 citations · 775 across the 68 of their papers we have counts for
3 papers · 1 filter
Creation of unstable particles and decoherence in semiclassical cosmology
Mario Castagnino, Susana Landau, Fernando C. Lombardo
We consider a simple cosmological model in order to show the importance of unstable particle creation for the validity of the semiclassical approximation. Using the mathematical st…
The Gamow vectors and the Schwinger effect
Fabian H. Gaioli, Edgardo T. Garcia Alvarez, Mario A. Castagnino
We introduce a `proper time' formalism to study the instability of the vacuum in a uniform external electric field due to particle production. This formalism allows us to reduce a…
From classical chaos to decoherence in Robertson-Walker cosmology
Fernando C. Lombardo, Mario Castagnino, Luca Bombelli
We analyse the relationship between classical chaos and particle creation in Robertson-Walker cosmological models with gravity coupled to a scalar field. Within our class of models…