3 citations · 8 across the 3 of their papers we have counts for
6 papers
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…
Adiabatic regularization for Dirac fields in time-varying electric backgrounds
Pau Beltrán-Palau, Jose Navarro-Salas, Silvia Pla
The adiabatic regularization method was originally proposed by Parker and Fulling to renormalize the energy-momentum tensor of scalar fields in expanding universes. It can be exten…
Translational anomaly of chiral fermions in two dimensions
Pau Beltrán-Palau, Jose Navarro-Salas, Silvia Pla
It is well known that a quantized two-dimensional Weyl fermion coupled to gravity spoils general covariance and breaks the covariant conservation of the energy-momentum tensor. In…
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…
Adiabatic regularization with a Yukawa interaction
Antonio Ferreiro, Adrian del Rio, Jose Navarro-Salas +2
We extend the adiabatic regularization method for an expanding universe to include the Yukawa interaction between a quantized Dirac field and a homogeneous time-dependent scalar fi…
Pair creation in electric fields, renormalization, and backreaction
Antonio Ferreiro, Jose Navarro-Salas, Silvia Pla
We consider pair production phenomena in spatially homogeneous strong electric fields. We focus on spinor QED in two-dimensions and discuss the potential ambiguity in the adiabatic…