2k citations · 12k across the 281 of their papers we have counts for
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Phenomenological constraints on a scale-dependent gravitational coupling
Orfeu Bertolami, Juan García-Bellido
We investigate the astrophysical and cosmological implications of the recently proposed idea of a running gravitational coupling on macroscopic scales. We find that when applied to…
Constraints on Supergravity Chaotic Inflationary Models
M. C. Bento, O. Bertolami
We discuss, in the context of hidden sector non-minimal supergravity chaotic inflationary models, constraints on the parameters of a polynomial superpotential resulting from…
String Theory and Cosmology
M. C. Bento, O. Bertolami
We discuss the main cosmological implications of considering string-loop effects and a potential for the dilaton in the lowest order string effective action. Our framework is based…
Astrophysical and cosmological constraints on a scale-dependent gravitational coupling
Orfeu Bertolami, Juan Garcia-Bellido
We study the phenomenological consequences of the recently proposed idea of a running gravitational coupling on macroscopic scales. When applied to the rotation curves of galaxies,…
Cosmological Solutions of Higher-Curvature String Effective Theories with Dilatons
M. C. Bento, O. Bertolami
We study the effect of higher-curvature terms in the string low-energy effective actions on the cosmological solutions of the theory, up to corrections quartic in the curvatures, f…
Decoherence Due to Massive Vector Fields with Global Symmetries
O. Bertolami, P. V. Moniz
Retrieval of classical behaviour in quantum cosmology is usually discussed in the framework of minisuperspace models in the presence of scalar fields together with the inhomogeneou…