9 citations · 14 across the 5 of their papers we have counts for
12 papers
Renormalization and decoupling for the Yukawa model in curved spacetime
Sergi Nadal-Gisbert, Antonio Ferreiro, José Navarro-Salas
We consider the renormalization of the one-loop effective action for the Yukawa interaction. We compute the beta functions in the generalized DeWitt-Schwinger subtraction scheme. F…
Renormalization, running couplings and decoupling for the Yukawa model in curved spacetime
Antonio Ferreiro, Sergi Nadal-Gisbert, José Navarro-Salas
The decoupling of heavy fields as required by the Appelquist-Carazzone theorem plays a fundamental role in the construction of any effective field theory. However, it is not a triv…
Instantaneous vacuum for Dirac fields with a Yukawa interaction in cosmological space-times
Antonio Ferreiro
We propose a suitable vacuum state for a quantized Dirac field interacting with a classical scalar field in a Friedman-Robertson-Walker-Lemaitre spacetime. This state is constructe…
Running gravitational couplings, decoupling, and curved spacetime renormalization
Antonio Ferreiro, Jose Navarro-Salas
We propose to slightly generalize the DeWitt-Schwinger adiabatic renormalization subtractions in curved space to include an arbitrary renormalization mass scale . The new predic…
R-summed form of adiabatic expansions in curved spacetime
Antonio Ferreiro, Jose Navarro-Salas, Silvia Pla
The Feynman propagator in curved spacetime admits an asymptotic (Schwinger-DeWitt) series expansion in derivatives of the metric. Remarkably, all terms in the series containing the…
Breaking of adiabatic invariance in the creation of particles by electromagnetic fields
Pau Beltrán-Palau, Antonio Ferreiro, Jose Navarro-Salas +1
Particles are spontaneously created from the vacuum by time-varying gravitational or electromagnetic backgrounds. It has been proven that the particle number operator in an expandi…