211 citations · 649 across the 22 of their papers we have counts for
8 papers · 1 filter
Gravitational waves in an anomaly-induced inflation
J. C. Fabris, A. M. Pelinson, I. L. Shapiro +1
The behaviour of gravitational waves in the anomaly-induced inflationary phase is studied. The metric perturbations exhibit a stable behaviour, with a very moderate growth in the a…
Stability issues in the modified Starobinsky model
A. M. Pelinson, I. L. Shapiro, F. I. Takakura
We discuss the stability of the anomaly-induced inflation (modified Starobinsky model) with respect to the arbitrary choice of initial data and with respect to the small perturbati…
An Overview of the Anomaly-Induced Inflation
Ilya L. Shapiro
The anomaly-induced inflation (modified Starobinsky model) is based on the application of the effective quantum field theory approach to the Early Universe. We present a brief gene…
Renormalization Group and Decoupling in Curved Space: III. The Case of Spontaneous Symmetry Breaking
Eduard V. Gorbar, Ilya L. Shapiro
We continue investigation of the renormalization group and decoupling of the quantized massive fields in curved space. In the present work we analyze a theory, where fields gain th…
Testing the running of the cosmological constant with Type Ia Supernovae at high z
Cristina Espana-Bonet, Pilar Ruiz-Lapuente, Ilya L. Shapiro +1
Within the Quantum Field Theory context the idea of a "cosmological constant" (CC) evolving with time looks quite natural as it just reflects the change of the vacuum energy with t…
Conformal Quantum Gravity with the Gauss-Bonnet Term
G. de Berredo-Peixoto, I. L. Shapiro
The conformal gravity is one of the most important models of quantum gravity with higher derivatives. We investigate the role of the Gauss-Bonnet term in this theory. The coinciden…