65 citations · 148 across the 8 of their papers we have counts for
8 papers
Scalar spectral index in the presence of Primordial Black Holes
Gaveshna Gupta, Ramkishor Sharma, T. R. Seshadri
We study the possibility of reheating the universe in its early stages through the evaporation of Primordial Black Holes (PBHs) that are formed due to the collapse of the inhomogen…
Plateau Inflation in SUGRA-MSSM
Girish Kumar Chakravarty, Gaveshna Gupta, Gaetano Lambiase +1
We explored a Higgs inflationary scenario in the SUGRA embedding of the MSSM in Einstein frame where the inflaton is contained in the Higgs doublet. We include all higher o…
Thawing quintessence from the inflationary epoch to today
Gaveshna Gupta, Raghavan Rangarajan, Anjan A. Sen
Using the latest observational data we obtain a lower bound on the initial value of the quintessence field in thawing quintessence models of dark energy. For potentials of the form…
GCG Parametrization for Growth Function and Current Constraints
Gaveshna Gupta, Somasri Sen, Anjan A. Sen
We study the linear growth function for large scale structures in a cosmological scenario where Generalised Chaplygin Gas (GCG) serves as dark energy candidate. We parametrize…
Constraining Thawing Quintessence
Gaveshna Gupta, Subhabrata Majumdar, Anjan A Sen
We look at observational constraints on the thawing class of scalar field models proposed to explain the late time acceleration of the universe. Using the recently introduced `Stat…
Observational Constraints on Axions as Quintessence in String Theory
Gaveshna Gupta, Sudhakar Panda, Anjan A Sen
We study the observational constraints for the axion models in string theory which can successfully act as quintessence. The evolution of the universe in this model is sensitive to…