We generalize the adiabatic renormalization to theories with dispersion relations modified at energies higher than a new scale MC. We obtain explicit expressions for the mean value of the stress tensor in the adiabatic vacuum, up to the second adiabatic order. We show that for any dispersion relation the divergences can be absorbed into the bare gravitational constants of the theory. We also point out that, depending on the renormalization prescription, the renormalized stress tensor may contain finite trans-Planckian corrections even in the limit MC → ∞. © 2007 IOP Publishing Ltd.Fil: Lopez Nacir, Diana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto ...
This thesis concerns research undertaken in two related topics concerning high-energy gravitational ...
The appearance of the quantum gravitational effects in a very high energy regime necessitates some c...
The renormalization of a scalar field theory with a quartic self-coupling (a Robertson-Walker spacet...
We generalize the adiabatic renormalization to theories with dispersion relations modified at energi...
We consider a free quantum scalar field satisfying modified dispersion relations in curved spacetime...
We provide an explicit expression for the renormalized expectation value of the stress-energy tensor...
We review the adiabatic renormalization method for spin-1/2 fields in FLRW spacetimes, emphasizing i...
We show that the running of gravitational couplings, together with a suitable identification of the ...
We propose a new scheme to regularize the stress-energy tensor and the two-point function of free qu...
We study the renormalized energy-momentum tensor of gravitons in a de Sitter space-time. After canon...
We introduce a new approach to renormalize physical quantities in curved space-time by adiabatic sub...
We consider a massive scalar field living on the recently found exact quantum space-time correspondi...
The adiabatic regularization method was designed by L. Parker [1] for scalar fields in order to to s...
We carefully study the implications of adiabaticity for the behavior of cosmological perturbations. ...
AbstractWe carefully study the implications of adiabaticity for the behavior of cosmological perturb...
This thesis concerns research undertaken in two related topics concerning high-energy gravitational ...
The appearance of the quantum gravitational effects in a very high energy regime necessitates some c...
The renormalization of a scalar field theory with a quartic self-coupling (a Robertson-Walker spacet...
We generalize the adiabatic renormalization to theories with dispersion relations modified at energi...
We consider a free quantum scalar field satisfying modified dispersion relations in curved spacetime...
We provide an explicit expression for the renormalized expectation value of the stress-energy tensor...
We review the adiabatic renormalization method for spin-1/2 fields in FLRW spacetimes, emphasizing i...
We show that the running of gravitational couplings, together with a suitable identification of the ...
We propose a new scheme to regularize the stress-energy tensor and the two-point function of free qu...
We study the renormalized energy-momentum tensor of gravitons in a de Sitter space-time. After canon...
We introduce a new approach to renormalize physical quantities in curved space-time by adiabatic sub...
We consider a massive scalar field living on the recently found exact quantum space-time correspondi...
The adiabatic regularization method was designed by L. Parker [1] for scalar fields in order to to s...
We carefully study the implications of adiabaticity for the behavior of cosmological perturbations. ...
AbstractWe carefully study the implications of adiabaticity for the behavior of cosmological perturb...
This thesis concerns research undertaken in two related topics concerning high-energy gravitational ...
The appearance of the quantum gravitational effects in a very high energy regime necessitates some c...
The renormalization of a scalar field theory with a quartic self-coupling (a Robertson-Walker spacet...