28 citations · 205 across the 21 of their papers we have counts for
22 papers
Prospects of Probing Dark Matter Condensates with Gravitational Waves
Shreya Banerjee, Sayantani Bera, David F. Mota
The Lambda-Cold Dark Matter model explains cosmological observations most accurately till date. However, it is still plagued with various shortcomings at galactic scales. Models of…
Alleviating Tension with New Gravitational Scalar Tensor Theories
Shreya Banerjee, Maria Petronikolou, Emmanuel N. Saridakis
We investigate the cosmological applications of new gravitational scalar-tensor theories and we analyze them in the light of tension. In these theories the Lagrangian contain…
Constraining bouncing cosmologies with primordial black holes
Shreya Banerjee, Theodoros Papanikolaou, Emmanuel N. Saridakis
The phenomenology of primordial black hole (PBH) physics and the associated PBH abundance constraints, can be used in order to probe the physics of the early Universe. In this work…
Luminosity Selection for Gamma Ray Burst
Shreya Banerjee, Dafne Guetta
There exists an inevitable scatter in intrinsic luminosity of Gamma Ray Bursts(GRBs). If there is relativistic beaming in the source, viewing angle variation necessarily introduces…
Differential Source Count for Gamma Ray Bursts
Shreya Banerjee, David Eichler, Dafne Guetta
Different forms of long gamma-ray bursts (GRBs) Luminosity Functions are considered on the basis of an explicit physical model. The inferred flux distributions are compared with th…
Luminosity Selection for Gamma Ray Bursts
Shreya Banerjee, David Eichler, Dafne Guetta
There exists an inevitable scatter in intrinsic luminosity of Gamma Ray Bursts(GRBs). If there is relativistic beaming in the source, viewing angle variation necessarily introduces…
Growth of Linear Perturbations in a Universe with Superfluid Dark Matter
Shreya Banerjee, Sayantani Bera, David F. Mota
The Lambda-Cold Dark Matter (LCDM) model agrees with most of the cosmological observations, but has some hindrances from observed data at smaller scales such as galaxies. Recently,…
Stability of charged particles inside a Paul trap with spontaneous localization dynamics
Sayantani Bera, Shreya Banerjee
Paul traps are ion traps that are widely used in spectroscopic experiments to confine and stabilize a charged particle within a small region using oscillating electric fields. The…
Evading the theoretical no-go theorem for nonsingular bounces in Horndeski/Galileon cosmology
Shreya Banerjee, Yi-Fu Cai, Emmanuel N. Saridakis
We show that a nonsingular bounce, free of ghosts and gradient instabilities, can be realized in the framework of Horndeski or generalized Galileon cosmology. In particular, we fir…
Bounce and cyclic cosmology in new gravitational scalar-tensor theories
Emmanuel N. Saridakis, Shreya Banerjee, R. Myrzakulov
We study the bounce and cyclicity realization in the framework of new gravitational scalar-tensor theories. In these theories the Lagrangian contains the Ricci scalar and its first…
The Minimum Distance of PPT Bound Entangled States from the Maximally Mixed State
Shreya Banerjee, Aryaman A. Patel, Prasanta K. Panigrahi
Using a geometric measure of entanglement quantification based on Euclidean distance of the Hermitian matrices, we obtain the minimum distance between a bipartite bound entangled $…
On signatures of spontaneous collapse dynamics modified single field inflation
Shreya Banerjee, Suratna Das, K. Sravan Kumar +1
The observed classicality of primordial perturbations, despite their quantum origin during inflation, calls for a mechanism for quantum-to-classical transition of these initial flu…
Quantum nonlocality, and the end of classical space-time
Shreya Banerjee, Sayantani Bera, T. P. Singh
Quantum non-local correlations and the acausal, spooky action at a distance suggest a discord between quantum theory and special relativity. We propose a resolution for this discor…
Bounce and cyclic cosmology in weakly broken galileon theories
Shreya Banerjee, Emmanuel N. Saridakis
We investigate the bounce and cyclicity realization in the framework of weakly broken galileon theories. We study bouncing and cyclic solutions at the background level, reconstruct…
Quantum discord as a tool for comparing collapse models and decoherence
Shreya Banerjee, Sayantani Bera, Tejinder P. Singh
The quantum to classical transition maybe caused by decoherence or by dynamical collapse of the wave-function. We propose quantum discord as a tool, 1) for comparing and contrastin…
Cosmological hysteresis in cyclic universe from membrane paradigm
Sayantan Choudhury, Shreya Banerjee
Cosmological hysteresis is a purely thermodynamical phenomenon caused by the gradient in pressure, hence the characteristic equation of state during the expansion and contraction p…
Constraints on fourth order gravity from binary pulsar and gravitational waves
Shreya Banerjee, Sayantani Bera, Srimanta Banerjee +1
We have earlier proposed a fourth order gravity model as a possible explanation for late time cosmic acceleration, and for flattened galaxy rotation curves. The model has a free le…
Cosmic Hysteresis
Sayantan Choudhury, Shreya Banerjee
Cosmological hysteresis, has interesting and vivid implications in the scenario of a cyclic bouncy universe. This, purely thermodynamical in nature, is caused by the asymmetry in t…
Hysteresis in the Sky
Sayantan Choudhury, Shreya Banerjee
Hysteresis is a phenomenon occurring naturally in several magnetic and electric materials in condensed matter physics. When applied to cosmology, aka cosmological hysteresis, has i…
Cosmological Constant, Quantum Measurement, and the Problem of Time
Shreya Banerjee, Sayantani Bera, Tejinder P. Singh
Three of the big puzzles of theoretical physics are the following: (i) There is apparently no time evolution in the dynamics of quantum general relativity, because the allowed quan…
Cosmic Acceleration in a Model of Fourth Order Gravity
Shreya Banerjee, Nilesh Jayswal, Tejinder P. Singh
We investigate a fourth order model of gravity, having a free length parameter, and no cosmological constant or dark energy. We consider cosmological evolution of a flat Friedmann…
Classicalization of inflationary perturbations by collapse models in the light of BICEP2
Suratna Das, Satyabrata Sahu, Shreya Banerjee +1
Inflationary and hence quantum origin of primordial perturbations is on a firmer ground than ever post the BICEP2 observations of primordial gravitational waves. One crucial ingred…