70 citations · 222 across the 13 of their papers we have counts for
3 papers · 1 filter
Invariance of cosmological number counts under disformal transformations
Basundhara Ghosh, Jérémie Francfort, Rajeev Kumar Jain
We investigate whether true physical observables associated with the measurements of large scale structure in the universe are frame-independent. In particular, we study if cosmolo…
Can breakdown of perturbation in the -attractor inflation lead to PBH formation?
Chitrak Sarkar, Arunoday Sarkar, Basundhara Ghosh +1
With the basic -attractor potentials, we investigate an inflationary regime in the high- limit, where the cosmological perturbation breaks down due to large enhancement in th…
Cosmological Number Counts in Einstein and Jordan frames
Jérémie Francfort, Basundhara Ghosh, Ruth Durrer
Even though we know that physical observations are frame independent, the frame dependence of cosmological perturbations is relatively subtle and has led to confusion in the past.…