260 citations · 2.4k across the 63 of their papers we have counts for
6 papers · 1 filter
Non-gaussianities and the Stimulated creation of quanta in the inflationary universe
Ivan Agullo, Leonard Parker
Cosmological inflation generates a spectrum of density perturbations that can seed the cosmic structures we observe today. These perturbations are usually computed as the result of…
Acceleration radiation, transition probabilities, and trans-Planckian physics
I. Agullo, J. Navarro-Salas, G. J. Olmo +1
An important question in the derivation of the acceleration radiation, which also arises in Hawking's derivation of black hole radiance, is the need to invoke trans-Planckian physi…
Hawking radiation by Kerr black holes and conformal symmetry
Ivan Agullo, Jose Navarro-Salas, Gonzalo J. Olmo +1
The exponential blueshift associated with the event horizon of a black hole makes conformal symmetry play a fundamental role in accounting for its thermal properties. Using a deriv…
Inflation, Quantum Field Renormalization, and CMB Anisotropies
Ivan Agullo, Jose Navarro-Salas, Gonzalo J. Olmo +1
We point out that if quantum field renormalization is taken into account the predictions of slow-roll inflation for both the scalar and tensorial power spectra change significantly…
Reply to "Comment on 'Insensitivity of Hawking radiation to an invariant Planck-scale cutoff' "
Ivan Agullo, Jose Navarro-Salas, Gonzalo J. Olmo +1
We clarify the relationship between the conclusions of the previous Comment of A. Helfer [1] and that of our Brief Report [arXiv:0906.5315]
Inflation, Renormalization, and CMB Anisotropies
I. Agullo, J. Navarro-Salas, Gonzalo J. Olmo +1
In single-field, slow-roll inflationary models, scalar and tensorial (Gaussian) perturbations are both characterized by a zero mean and a non-zero variance. In position space, the…