159 citations · 996 across the 42 of their papers we have counts for
19 papers · 1 filter
Scalar field-perfect fluid correspondence and nonlinear perturbation equations
Roberto Mainini
The properties of dynamical Dark Energy (DE) and, in particular, the possibility that it can form or contribute to stable inhomogeneities, have been widely debated in recent litera…
Suppression of Meszaros' Effect in coupled DE
Silvio Bonometto, Roberto Mainini
A phaenomenological DM-DE coupling could indicate their common origin. Various constraint however exist to such coupling; here we outline that it can suppress Meszaros' effect, yie…
Limits on coupling between dark components
Roberto Mainini, Silvio Bonometto
DM--DE coupling can be a phenomenological indication of a common origin of the dark cosmic components. In this work we outline a new constraint to coupled--DE models: the coupling…
Dark Matter, Dark Energy and the solution of the strong CP problem
Roberto Mainini, Loris Colombo, Silvio Bonometto
The strong CP problem was solved by Peccei & Quinn by introducing axions, a viable candidate for Dark Matter (DM). Here the PQ approach is modified so to yield also Dark Energy (DE…
The Dark Side and its Nature
S. A. Bonometto, R. Mainini, L. P. L. Colombo
Although the cosmic concordance cosmology is quite successful in fitting data, fine tuning and coincidence problems apparently weaken it. We review several possibilities to ease it…
Mass functions in coupled Dark Energy models
Roberto Mainini, Silvio Bonometto
We evaluate the mass function of virialized halos, by using Press & Schechter (PS) and/or Steth & Tormen (ST) expressions, for cosmologies where Dark Energy (DE) is due to a scalar…