49 citations · 91 across the 17 of their papers we have counts for
9 papers · 1 filter
Torsion and Chern-Simons gravity in 4D space-times from a Geometrodynamical four-form
Patrick Das Gupta
The space-time geometry in any inertial frame is described by the line-element . Now, not only the Minkowski metric is invariant under proper Loren…
Black Hole Menagerie, Charged/Dyonic BHs and Radiation from Interacting Dyonic BH Pairs
Patrick Das Gupta, Mohd. Sirtaz
We describe charged BHs, Penrose process for energy extraction from Kerr BHs and Wald's proposal concerning a Kerr BH slowly becoming a Kerr-Newman BH in the presence of a uniform…
Aspects of Black Hole Physics and Formation of Super-massive Black Holes from Ultra-light Dark Bosons
Patrick Das Gupta, Fazlu Rahman
First, we verify that the physical parameters estimated for the four directly detected gravitational wave (GW) events involving coalescence of binary black holes (BHs) indeed uphol…
Supermassive Black Holes from self-gravitating Bose-Einstein Condensates comprised of Ultra-light Bosonic Dark Matter
Patrick Das Gupta, Eklavya Thareja
Observed active galactic nuclei at redshifts suggest that supermassive black holes (SMBHs) had formed early on. Accretion of matter onto remnants of Population III star…
General Relativity and Compact Objects
Patrick Das Gupta
Starting with the conceptual foundation of general relativity (GR) - equivalence principle, space-time geometry and special relativity, I train cross hairs on two characteristic pr…
Gravity, Bose-Einstein Condensates and Gross-Pitaevskii Equation
Patrick Das Gupta
We explore the effect of mutual gravitational interaction between ultra-cold gas atoms on the dynamics of Bose-Einstein condensates (BEC). Small amplitude oscillation of BEC is stu…
Gravitational waves in the presence of a dynamical four-form
Patrick Das Gupta
Propagation of weak gravitational waves, when a dynamical four-form is around, has been investigated. Exact, self-consistent solutions corresponding to plane, monochromatic gravita…
On Chern-Simons corrections to magnetohydrodynamics equations
Patrick Das Gupta
We study the effect of a (3+1)-dimensional Chern-Simons electrodynamics on the equations governing the dynamics of magnetized plasma and fields. In this model, the Chern-Simons (CS…
Dark energy and Chern-Simons like gravity from a dynamical four-form
Patrick Das Gupta
We consider the dynamics of a four-form field , treating it as a distinct physical degree of freedom, independent of the metric. The equations of motion are derived fr…