We solve exactly the (linear-order) equations for tensor and scalar perturbations over the homogeneous, isotropic, open pre-big bang model recently discussed by several authors. We find that, in spite of claims to the contrary, vacuum quantum fluctuations, although parametrically amplified, remain negligible throughout the perturbative pre-big bang phase
We consider the evolution of scalar perturbations in a class of non-singular bouncing universes obta...
A simple proof is given, valid to all orders, that the scalar field perturbations generated from the...
I review the standard analysis of adiabatic scalar and tensor perturbations produced by slow-roll in...
AbstractIt is believed that the recent detection of large tensor perturbations strongly favors the i...
We show that a contracting universe which bounces due to quantum cosmological effects and connects t...
An analysis of the decoherence of quantum fluctuations shows that production of classical adiabatic ...
The physics of the inflationary universe requires the study of the out of equilibrium evolution of q...
We show that in a generic case of the pre-big-bang scenario, inflation will solve cosmological probl...
Using techniques from loop quantum gravity, the standard theory of cosmological perturbations was re...
We explain in detail the quantum-to-classical transition for the cosmological perturbations using on...
In string theory, the traditional picture of a Universe that emerges from the inflation of a very sm...
In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation to stretch an initial ...
An inhomogeneous version of Pre--Big Bang cosmology emerges, within string theory, from quite generi...
After introducing gauge-invariant cosmological perturbation theory we give an improved set of govern...
Within a broad class of inflationary models we critically analyze the way initial quantum fluctuatio...
We consider the evolution of scalar perturbations in a class of non-singular bouncing universes obta...
A simple proof is given, valid to all orders, that the scalar field perturbations generated from the...
I review the standard analysis of adiabatic scalar and tensor perturbations produced by slow-roll in...
AbstractIt is believed that the recent detection of large tensor perturbations strongly favors the i...
We show that a contracting universe which bounces due to quantum cosmological effects and connects t...
An analysis of the decoherence of quantum fluctuations shows that production of classical adiabatic ...
The physics of the inflationary universe requires the study of the out of equilibrium evolution of q...
We show that in a generic case of the pre-big-bang scenario, inflation will solve cosmological probl...
Using techniques from loop quantum gravity, the standard theory of cosmological perturbations was re...
We explain in detail the quantum-to-classical transition for the cosmological perturbations using on...
In string theory, the traditional picture of a Universe that emerges from the inflation of a very sm...
In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation to stretch an initial ...
An inhomogeneous version of Pre--Big Bang cosmology emerges, within string theory, from quite generi...
After introducing gauge-invariant cosmological perturbation theory we give an improved set of govern...
Within a broad class of inflationary models we critically analyze the way initial quantum fluctuatio...
We consider the evolution of scalar perturbations in a class of non-singular bouncing universes obta...
A simple proof is given, valid to all orders, that the scalar field perturbations generated from the...
I review the standard analysis of adiabatic scalar and tensor perturbations produced by slow-roll in...
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