31 citations · 40 across the 4 of their papers we have counts for
7 papers
Stability of semiclassical gravity solutions with respect to quantum metric fluctuations
B. L. Hu, Albert Roura, Enric Verdaguer
We discuss the stability of semiclassical gravity solutions with respect to small quantum corrections by considering the quantum fluctuations of the metric perturbations around the…
Macroscopic quantum tunneling with decoherence
Esteban Calzetta, Enric Verdaguer
The tunneling probability for a system modelling macroscopic quantum tunneling is computed. We consider an open quantum system with one degree of freedom consisting of a particle t…
Propagation in a thermal graviton background
Daniel Arteaga, Renaud Parentani, Enric Verdaguer
It is well known that radiative corrections evaluated in nontrivial backgrounds lead to effective dispersion relations which are not Lorentz invariant. Since gravitational interact…
Activation-like processes at zero temperature
Daniel Arteaga, Esteban Calzetta, Albert Roura +1
We examine the possibility that a metastable quantum state could experiment a phenomenon similar to thermal activation but at zero temperature. In order to do that we study the rea…
Recent Advances in Stochastic Gravity: Theory and Issues
B. L. Hu, E. Verdaguer
Whereas semiclassical gravity is based on the semiclassical Einstein equation with sources given by the expectation value of the stress-energy tensor of quantum fields, stochastic…
Stochastic semiclassical gravity and fluctuations during inflation
Enric Verdaguer
Stochastic semiclassical gravity is a theory for the interaction of gravity with quantum matter fields which goes beyond the semiclassical limit. The theory predicts stochastic flu…