399 citations · 513 across the 7 of their papers we have counts for
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astro-ph2008★ 47 cited
Scalar Field Dark Energy Perturbations and their Scale Dependence
Sanil Unnikrishnan, H. K. Jassal, T. R. Seshadri
We estimate the amplitude of perturbation in dark energy at different length scales for a quintessence model with an exponential potential. It is shown that on length scales much s…
astro-ph2004★ 399 cited
WMAP constraints on low redshift evolution of dark energy
H. K. Jassal, J. S. Bagla, T. Padmanabhan
The conceptual difficulties associated with a cosmological constant have led to the investigation of alternative models in which the equation of state parameter, , of the da…
astro-ph2003
Tachyon Field in Cosmology
H. K. Jassal
We study cosmological effects of homogeneous tachyon field as dark energy. We concentrate on two different scalar field potentials, the inverse square potential and the exponential…