30 citations · 65 across the 7 of their papers we have counts for
7 papers
Is there ghost and tachyon free bounce in UV complete gravity theory?
Hao Hu, Alexey S. Koshelev, Abhishek Naskar
Analytic infinite derivative gravity theories provide a renormalizable and ghost-free description of gravity around covariantly constant backgrounds. These theories can have non-si…
Cosmic inflation in non-perturbative quantum gravity
Alexey S. Koshelev, Abhishek Naskar
String field theory motivated infinite-derivative models lead to non-local gravity modifications which form a promising class of quantum gravity candidates. In this paper we invest…
Generic 3-point Statistics with Tensor Modes in Light of Swampland and TCC
Abhishek Naskar, Supratik Pal
Recently proposed Swampland Criteria (SC) and Trans-Planckian Censorship Conjecture (TCC) together put stringent theoretical constraints on slow roll inflation, raising a question…
Enhanced tensor non-Gaussianities in presence of a source
Abhishek Naskar, Supratik Pal
We address the possibility of having an enhanced signal for tensor non-Gaussianities in presence of a source, as a signature of Primordial Gravitational Waves. We employ a nearly m…
Strong Bounds on Sum of Neutrino Masses in a 12 Parameter Extended Scenario with Non-Phantom Dynamical Dark Energy ()
Shouvik Roy Choudhury, Abhishek Naskar
We obtained constraints on a 12 parameter extended cosmological scenario including non-phantom dynamical dark energy (NPDDE) with CPL parametrization. We also include the six CD…
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…
EFT of Inflation: Reflections on CMB and Forecasts on LSS Surveys
Abhishek Naskar, Sayantan Choudhury, Argha Banerjee +1
We investigate the possibility of constraining parameters of Effective Field Theory (EFT) of inflation with upcoming Large Scale Structure (LSS) surveys in order to have a better u…