404 citations · 1.1k across the 14 of their papers we have counts for
6 papers · 2 filters
A unified approach to scaling solutions in a general cosmological background
Shinji Tsujikawa, M. Sami
Our ignorance about the source of cosmic acceleration has stimulated study of a wide range of models and modifications to gravity. Cosmological scaling solutions in any of these th…
Aspects of Scalar Field Dynamics in Gauss-Bonnet Brane Worlds
M. Sami, N. Savchenko, A. Toporensky
The Einstein-Gauss-Bonnet equations projected from the bulk to brane lead to a complicated Friedmann equation which simplifies to in the asymptotic regimes. The Rand…
Unifying Brane World Inflation with Quintessence
M. Sami, N. Dadhich
We review the recent attempts of unifying inflation with quintessence. It appears natural to join the two ends in the framework of brane world cosmology. The models of quintessenti…
Generation of electromagnetic fields in string cosmology with a massive scalar field on the anti D-brane
Mohammad R. Garousi, M. Sami, Shinji Tsujikawa
We study the generation of electromagnetic fields in a string-inspired scenario associated with a rolling massive scalar field on the anti-D3 branes of KKLT de Sitter vacua. Th…
Cosmological perturbations from braneworld inflation with a Gauss-Bonnet term
J. -F. Dufaux, J. Lidsey, R. Maartens +1
Braneworld inflation is a phenomenology related to string theory that describes high-energy modifications to general relativistic inflation. The observable universe is a braneworld…
Quintessential Inflation on the Brane and the Relic Gravity Wave Background
M. Sami, V. Sahni
Quintessential inflation describes a scenario in which both inflation and dark energy (quintessence) are described by the same scalar field. In conventional braneworld models of qu…