82 citations · 1.2k across the 53 of their papers we have counts for
8 papers · 1 filter
Pauli-Zeldovich cancellation of the vacuum energy divergences, auxiliary fields and supersymmetry
A. Yu. Kamenshchik, A. A. Starobinsky, A. Tronconi +2
We have considered the Pauli-Zeldovich mechanism for the cancellation of the ultraviolet divergences in vacuum energy. This mechanism arises because bosons and fermions give contri…
Integrable cosmological models with non-minimally coupled scalar fields
A. Yu. Kamenshchik, E. O. Pozdeeva, A. Tronconi +2
We obtain general solutions for some flat Friedmann universes filled with a scalar field in induced gravity models and models including the Hilbert-Einstein curvature term plus a s…
Vacuum Energy and Standard Model Physics
G. L. Alberghi, A. Y. Kamenshchik, A. Tronconi +2
The conditions for the cancellation of one loop contributions to vacuum energy (both U.V. divergent and finite) coming from the Standard Model (SM) fields are examined. It is prove…
Cosmological Unparticle Correlators
G. L. Alberghi, A. Yu. Kamenshchik, A. Tronconi +2
We introduce and study an extension of the correlator of unparticle matter operators in a cosmological environment. Starting from FRW spaces we specialize to a de Sitter spacetime…
Inflation and the semiclassical dynamics of a conformal scalar field
G. L. Alberghi, C. Appignani, R. Casadio +2
We derive the semiclassical evolution of massless conformally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation.…
Vacuum energy and spectral function sum rules
A. Y. Kamenshchik, A. Tronconi, G. P. Vacca +1
We reformulate the problem of the cancellation of the ultraviolet divergencies of the vacuum energy, particularly important at the cosmological level, in terms of a saturation of s…
Planck scale inflationary spectra from quantum gravity
Gian Luigi Alberghi, Roberto Casadio, Alessandro Tronconi
We derive the semiclassical evolution of massless minimally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation. We…
Particle Production in Tachyon Condensation
G. L. Alberghi, R. Casadio, A. Tronconi
We study particle production in the tachyon condensation process as described by different effective actions for the tachyon. By making use of invariant operators, we are able to o…