399 citations
- Tata Institute of Fundamental ResearchIN18 papers
- Saha Institute of Nuclear PhysicsIN16 papers
- University of CalcuttaIN16 papers
- Inter-University Centre for Astronomy and AstrophysicsIN11 papers
- Indian Association for the Cultivation of ScienceIN8 papers
- Sorbonne UniversitéFR7 papers
- Jamia Millia IslamiaIN6 papers
- Laboratoire de Physique Théorique et Hautes EnergiesFR6 papers
- Weizmann Institute of ScienceIL6 papers
- Centre National de la Recherche ScientifiqueFR5 papers
- Indian Institute of Science BangaloreIN5 papers
- Kyoto UniversityJP5 papers
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astro-ph.CO2010★ 38 cited
A note on perfect scalar fields
Sanil Unnikrishnan, L. Sriramkumar
We derive a condition on the Lagrangian density describing a generic, single, non-canonical scalar field, by demanding that the intrinsic, non-adiabatic pressure perturbation assoc…
astro-ph.CO2009★ 24 cited
A comparison of perturbations in fluid and scalar field models of dark energy
H. K. Jassal
We compare perturbations in a fluid model of dark energy with those in a scalar field. As compared to the CDM model, large scale matter power spectrum is suppressed in fluid mod…