1.1k citations · 3.2k across the 106 of their papers we have counts for
111 papers
Realizing late-time cosmology in the context of Dynamical Stability Approach
Anirban Chatterjee, Saddam Hussain, Kaushik Bhattacharya
We examine the scenario of non-minimally coupled relativistic fluid and -essence scalar field in a flat Friedmann-Lemaitre-Robertson-Walker universe. By adding a non-minimal cou…
Dynamical Analysis of the Dirac-Born-Infeld type of Tachyon field minimally coupled with barotropic fluid using EOS parametrization of a field
Saddam Hussain, Saikat Chakraborty, Nandan Roy +1
In this paper, we present a dynamical system analysis of the tachyon dark energy model by parametrization of the equation of state (EoS) of the dark energy. The choice of parametri…
Learning Homogenization for Elliptic Operators
Kaushik Bhattacharya, Nikola Kovachki, Aakila Rajan +2
Multiscale partial differential equations (PDEs) arise in various applications, and several schemes have been developed to solve them efficiently. Homogenization theory is a powerf…
Gravitational collapse of matter in the presence of Quintessence and Phantom-like scalar fields
Priyanka Saha, Dipanjan Dey, Kaushik Bhattacharya
In this work, we propose a model of the gravitational collapse of dark matter in the presence of quintessence or phantom-like scalar fields. Our treatment is based on the principle…
Dynamical stability in models where dark matter and dark energy are non-minimally coupled to curvature
Saddam Hussain, Anirban Chatterjee, Kaushik Bhattacharya
This work explores the dynamical stability of cosmological models where dark matter and dark energy can non-minimally couple to spacetime (scalar) curvature. Two different scenario…
Softening of the Hertz indentation contact in nematic elastomers
Ameneh Maghsoodi, Mohand O. Saed, Eugene M. Terentjev +1
Polydomain liquid crystalline (nematic) elastomers have highly unusual mechanical properties, dominated by the dramatically non-linear stress-strain response that reflects stress-i…