514 citations · 2.6k across the 30 of their papers we have counts for
30 papers
Dark Energy
Sergio Luigi Cacciatori, Vittorio Gorini, Federico Re
Among the great mysteries that physics has not yet solved are undoubtedly those of dark energy and dark matter. In this chapter we deal with the first of them. We will expound in d…
Dark Matter
Sergio Luigi Cacciatori, Vittorio Gorini, Federico Re
In this article we address the mystery of dark matter. We expound the various evidences, astrophysical and cosmological, leading to hypothesize the existence of an invisible form o…
Equatorial Lensing in the Balasin-Grumiller Galaxy Model
Marco Galoppo, Sergio Luigi Cacciatori, Vittorio Gorini +1
The Balasin-Grumiller model has been the first model employed as an attempt towards providing a fully general relativistic description of the dynamics of a disc galaxy. In this pap…
Towards a full general relativistic approach to galaxies
Davide Astesiano, Sergio L. Cacciatori, Federico Re
We analyze the dynamics of a single spiral galaxy from a general relativistic viewpoint. We employ the known family of stationary axially-symmetric solutions to Einstein gravity co…
Soft singularity crossing and transformation of matter properties
Zoltán Keresztes, László Á. Gergely, Alexander Yu. Kamenshchik +2
We investigate particular cosmological models, based either on tachyon fields or on perfect fluids, for which soft future singularities arise in a natural way. Our main result is t…
Scattering and delay time for 1D asymmetric potentials: the step-linear and the step-exponential cases
Luca Rizzi, Oliver F. Piattella, Sergio L. Cacciatori +1
We analyze the quantum-mechanical behavior of a system described by a one-dimensional asymmetric potential constituted by a step plus (i) a linear barrier or (ii) an exponential ba…