29 citations · 65 across the 6 of their papers we have counts for
6 papers
Vacuum Energy Decay
Enrique Álvarez, Roberto Vidal
The problem of the vacuum energy decay is studied through the analysis of the vacuum survival amplitude . Transition amplitudes are computed for finite time-sp…
Finite Time Vacuum Survival Amplitude and Vacuum Energy Decay
Enrique Álvarez, Roberto Vidal
The problem of the vacuum energy decay is studied for both signs of the cosmological constant, through the analysis of the vacuum survival amplitude, defined in terms of the {\em c…
The Imaginary Part of the Cosmological Constant
Enrique Álvarez, Roberto Vidal
Contents included in arXiv:1004.4867
Comments on the vacuum energy decay
Enrique Álvarez, Roberto Vidal
The {\em instability of vacuum energy} in de Sitter space as discussed recently by Polyakov is argued to be a generic feature when external gravitational fields are present. It is…
Weyl transverse gravity (WTDiff) and the cosmological constant
Enrique Álvarez, Roberto Vidal
Scale invariant (transverse) gravitational theories are introduced. They are invariant under pure metric rescalings (i.e. the matter fields are inert under those). This symmetry fo…
Eternity and the cosmological constant
Enrique Álvarez, Roberto Vidal
The purpose of this paper is to analyze the stability of interacting matter in the presence of a cosmological constant. Using an approach based on the heat equation, no imaginary p…