33 citations · 76 across the 4 of their papers we have counts for
4 papers
Constraints on the production of primordial magnetic seeds in pre-big bang cosmology
M. Gasperini
We study the amplification of the electromagnetic fluctuations, and the production of "seeds" for the cosmic magnetic fields, in a class of string cosmology models whose scalar and…
Observable gravitational waves in pre-big bang cosmology: an update
M. Gasperini
In the light of the recent results concerning CMB observations and GW detection we address the question of whether it is possible, in a self-consistent inflationary framework, to s…
Expanding and contracting universes in third quantized string cosmology
A. Buonanno, M. Gasperini, M. Maggiore +1
We discuss the possibility of quantum transitions from the string perturbative vacuum to cosmological configurations characterized by isotropic contraction and decreasing dilaton.…
The Inflationary Role of the Dilaton in String Cosmology
M. Gasperini
It is stressed that the kinematical problems of the standard cosmological model can be solved by a phase of accelerated contraction of the cosmic scale factor. Such a behaviour is…