171 citations · 205 across the 6 of their papers we have counts for
7 papers
A trace of inflation in the local behavior of cosmological constant
Elmo Benedetto, Antonio Feoli, Liberato Pizza
Assuming the existence of a cosmological constant depending on time, we study the evolution of this field in a local region of spacetime. Solving the standard equations of Einstein…
Different parametrizations of field equations in the theories of gravity
Liberato Pizza
In this paper we describe two different parametrizations of field equations in the theories of gravity and two resulting parametrizations of the Friedmann Equations. In part…
Cosmological evolution of thermal relic particles in gravity
S. Capozziello, V. Galluzzi, G. Lambiase +1
By considering gravity models, the cosmic evolution is modified with respect to the standard CDM scenario. In particular, the thermal history of particles results modifie…
Baryo-Leptogenesis induced by modified gravities in the primordial Universe
Liberato Pizza
The long-standing problem of the asymmetry between matter and antimatter in the Universe is, in this paper, analysed in the context of the modified theories of gravity. In particul…
Dynamically Induced Planck Scale and Inflation
Kristjan Kannike, Gert Hütsi, Liberato Pizza +4
Theories where the Planck scale is dynamically generated from dimensionless interactions provide predictive inflationary potentials and super-Planckian field variations. We first s…
A numerical approach to model independently reconstruct functions through cosmographic data
Liberato Pizza
The challenging issue of determining the correct among several possibilities is here revised by means of numerical reconstructions of the modified Friedmann equations around…