output
19982025
most citedDynamics of dark energy

6.3k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2004 · hep-thShow all

5 papers · 2 filters

hep-th2004★ 41 cited

Constraints on Dirac-Born-Infeld type dark energy models from varying alpha

Mohammad R. Garousi, M. Sami, Shinji Tsujikawa

We study the variation of the effective fine structure constant alpha for Dirac-Born-Infeld (DBI) type dark energy models. The DBI action based on string theory naturally gives ris…

hep-th2004★ 264 cited

What is needed of a tachyon if it is to be the dark energy?

Edmund J. Copeland, Mohammad R. Garousi, M. Sami +1

We study a dark energy scenario in the presence of a tachyon field with potential and a barotropic perfect fluid. The cosmological dynamics crucially depends on the asym…

hep-th2004★ 176 cited

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…

hep-th2004★ 368 cited

Dilatonic ghost condensate as dark energy

Federico Piazza, Shinji Tsujikawa

We explore a dark energy model with a ghost scalar field in the context of the runaway dilaton scenario in low-energy effective string theory. We address the problem of vacuum stab…

hep-th2004★ 43 cited

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…