68 citations · 922 across the 54 of their papers we have counts for
7 papers · 1 filter
A New Class of Non-canonical Conformal Attractors for Multifield Inflation
Tony Pinhero, Supratik Pal
We propose a new broad class of multi-field non-canonical inflationary models as an extension of multi-field conformal cosmological attractors. This also generalizes the recently d…
Hilltop inflation and generation of helical magnetic field
Sumanta Chakraborty, Supratik Pal, Soumitra SenGupta
Primordial magnetic field generated in the inflationary era can act as a viable source for the present day intergalactic magnetic field of sufficient strength. We present a fundame…
Inflation, (P)reheating and Neutrino Anomalies: Production of Sterile Neutrinos with Secret Interactions
Arnab Paul, Anish Ghoshal, Arindam Chatterjee +1
A number of experimental anomalies involving neutrinos hint towards the existence of at least an extra (a very light) sterile neutrino. However, such a species, appreciably mixing…
Exploring Inflationary Initial State With Large Scale Structure Observations
Debabrata Chandra, Supratik Pal
We investigate for possible constraints on inflationary initial state from Large Scale Structure (LSS) observations. Using a model-independent framework, we build the template for…
Non-Gaussian Features of Primordial Gravitational Waves
Abhishek Naskar, Supratik Pal
We explore possible non-Gaussian features of primordial gravitational waves by constructing model-independent templates for nonlinearity parameters of tensor bispectrum. Our analys…
Are and tensions generic to present cosmological data?
Archita Bhattacharyya, Ujjaini Alam, Kanhaiya Lal Pandey +2
Yes, for a wide range of cosmological models (CDM, non-interacting CDM or models with possible interactions between dark energy and dark matter, in either phantom or non-ph…