38 citations · 59 across the 8 of their papers we have counts for
8 papers
Tracing Primordial Gravitational Waves via non-Gaussian Signatures of Halo Bias
Mariam Abdelaziz, Pritha Bari, Sabino Matarrese +1
Primordial gravitational waves (PGWs) generate scalar density perturbations at second order. Since the induced density contrast is quadratic in the tensor field, it is intrinsicall…
Non-Gaussianity of Tensor Induced Density Perturbations
Mariam Abdelaziz, Pritha Bari, Sabino Matarrese +1
We investigate the non-Gaussianity of second-order matter density perturbations induced by primordial gravitational waves (GWs). These tensor-induced scalar modes arise from local…
Gravitational waves induced by scalar-tensor mixing
Pritha Bari, Nicola Bartolo, Guillem Domènech +1
This paper explores the physics of second-order gravitational waves (GWs) induced by scalar-tensor perturbation interactions in the radiation-dominated Universe. We investigate the…
An Analytical Study of the Primordial Gravitational-Wave-Induced Contribution to the Large-Scale Structure of the Universe
Pritha Bari, Daniele Bertacca, Nicola Bartolo +3
The imprint of gravitational waves (GWs) on large-scale structures (LSS) is a useful and promising way to detect or to constrain them. Tensor fossils have been largely studied in t…
Signatures of Primordial Gravitational Waves on the Large-Scale Structure of the Universe
Pritha Bari, Angelo Ricciardone, Nicola Bartolo +2
We study the generation and evolution of second-order energy-density perturbations arising from primordial gravitational waves. Such "tensor-induced scalar modes" approximately evo…
Evolution of scalar and vector cosmological perturbations through a bounce in metric gravity in flat FLRW spacetime
Pritha Bari, Kaushik Bhattacharya
In the present work we present the full treatment of scalar and vector cosmological perturbations in a non-singular bouncing universe in the context of metric cosmology. Sca…
Early universe cosmological solutions in exponential gravity
Pritha Bari, Kaushik Bhattacharya, Saikat Chakraborty
In this work we present some cosmologically relevant solutions using the spatially flat Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime in metric gravity where the form…
Causal horizons in a bouncing universe
Kaushik Bhattacharya, Pritha Bari, Saikat Chakraborty
As our understanding of the past in a bouncing universe is limited, it becomes difficult to propose a cosmological model which can give some understanding of the causal structure o…