The pre-big bang scenario in string cosmology - ScienceDirect Skip to main contentSkip to
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In the last decade, the study of the overall shape of the universe, called Cosmic Topology,
has become testable by astronomical observations, especially the data from the Cosmic …

The purpose of this paper is to establish possible implications of the de Broglie–Bohm
interpretation of quantum mechanics towards superstring cosmological dynamics. In this …

A model for time-dependent cosmological constant and its consistency with the present
Friedmann universe Page 1 Classical and Quantum Gravity A model for time-dependent …

We describe exact cosmological solutions with rotation and expansion in the low-energy
effective string theory. These models are spatially homogeneous (closed Bianchi type IX) …

We study a string-inspired cosmological model from the symmetries point of view. We start
by deducing the form that each physical quantity must take so that the field equations, in the …

Non-Abelian T-duality in pre-big-bang cosmology - ScienceDirect Skip to main contentSkip to
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The field equations derived from the low energy string effective action with a matter tensor
describing a perfect fluid with a barotropic equation of state are solved iteratively using the …

Son muchas las personas que me han ayudado a lo largo de mi vida académica, pero sin
duda, unas pocas han sido decisivas. Por ello, es mi deseo expresar mi más profundo …

We study a string inspired cosmological with variable potential through the Lagrangian
invariance method in order to determine the form of the potential. We have studied four …