68 citations · 469 across the 20 of their papers we have counts for
20 papers
Shadows in dyonic Kerr-Sen black holes
Soumya Jana, Sayan Kar
Black holes with dyonic charges in Einstein-Maxwell-dilaton-axion supergravity theory are revisited in the context of black hole shadows. We consider static as well as rotating (na…
Gravitational radiation from binary systems in gravity: A semi-classical approach
Ashish Narang, Subhendra Mohanty, Soumya Jana
The rate of energy loss and orbital period decay of quasi-stable compact binary systems are derived in theory of gravity using the method of a single vertex graviton emissio…
Gravitational radiation from binary systems in massive graviton theories
Tanmay Kumar Poddar, Subhendra Mohanty, Soumya Jana
Theories with massive gravitons have peculiarity called the van Dam-Veltman-Zakharov discontinuity in that the massive theory propagator does not go to the massless graviton propag…
Horndeski theories and beyond from higher dimensions
Soumya Jana, Charles Dalang, Lucas Lombriser
The Einstein-Hilbert action with a cosmological constant is the most general local four-dimensional action leading to second-order derivative equations of motion that are symmetric…
Constraints on long range force from perihelion precession of planets in a gauged scenario
Tanmay Kumar Poddar, Subhendra Mohanty, Soumya Jana
The standard model particles can be gauged in an anomaly free way by three possible gauge symmetries namely , , and . Of these, and ${L…
Vector gauge boson radiation from compact binary systems in a gauged scenario
Tanmay Kumar Poddar, Subhendra Mohanty, Soumya Jana
The orbital period of a compact binary system decays mainly due to quadrupole gravitational radiation, which agrees with the observation to within one percent. Other types of radia…
Constraints on higher curvature gravity from time delay between GW170817 and GRB 170817A
Avirup Ghosh, Soumya Jana, Akash K Mishra +1
General relativity may be an effective theory with higher curvature correction terms in the action. Inclusion of these terms leads to exciting new possibilities, e.g., gravitationa…
Constraints on ultra-light axions from compact binary systems
Tanmay Kumar Poddar, Subhendra Mohanty, Soumya Jana
Ultra light particles with axion-like couplings to other particles can be candidates for fuzzy dark matter (FDM) if the axion decay constant $f_a…
Overcharging black holes and cosmic censorship in Eddington-inspired Born-Infeld gravity
Soumya Jana, Rajibul Shaikh, Sudipta Sarkar
The Eddington-inspired Born-Infeld (EiBI) gravity is a modification of the theory of general relativity inspired by the nonlinear Born-Infeld electrodynamics. The theory is describ…
Constraints on theories of gravity from GW170817
Soumya Jana, Subhendra Mohanty
A novel constraint on theories of gravity is obtained from the gravitational wave signal emitted from the binary neutron star merger event GW170817. The theories poss…
Constraints on Born-Infeld gravity from the speed of gravitational waves after GW170817 and GRB 170817A
Soumya Jana, Girish Kumar Chakravarty, Subhendra Mohanty
The observations of gravitational waves from the binary neutron star merger event GW170817 and the subsequent observation of its electromagnetic counterparts from the gamma-ray bur…
Born-Infeld gravity with a Brans-Dicke scalar
Soumya Jana, Sayan Kar
Recently proposed Born-Infeld (BI) theories of gravity assume a constant BI parameter (). However, no clear consensus exists on the sign and value of . Recalling the Brans-Di…
Born-Infeld cosmology with scalar Born-Infeld matter
Soumya Jana, Sayan Kar
Cosmology in Eddington-inspired Born-Infeld gravity is investigated using a scalar Born-Infeld field (e.g. tachyon condensate) as matter. In this way, both in the gravity and matte…
Born-Infeld gravity coupled to Born-Infeld electrodynamics
Soumya Jana, Sayan Kar
We investigate spherically symmetric, static spacetimes in Eddington-inspired Born-Infeld gravity coupled to Born-Infeld electrodynamics. The two constants, and which par…
Cosmology in a reduced Born-Infeld-- theory of gravity
Soumya Jana
A perfect fluid, spatially flat cosmology in a model, derived from a recently proposed general Born-Infeld type theory of gravity is studied. Four dimensional cosmological s…
Three dimensional Eddington--inspired Born--Infeld gravity: solutions
Soumya Jana, Sayan Kar
Three dimensional Eddington-inspired Born--Infeld gravity is studied with the goal of finding new solutions. Beginning with cosmology, we obtain analytical and numerical solutions…
Perturbative stability of catenoidal soap films
Soumya Jana, Sayan Kar
The perturbative stability of catenoidal soap films formed between parallel, equal radii, coaxial rings is studied using analytical and semi-analytical methods. Using a theorem on…
Alphabet Sizes of Auxiliary Variables in Canonical Inner Bounds
Soumya Jana
Alphabet size of auxiliary random variables in our canonical description is derived. Our analysis improves upon estimates known in special cases, and generalizes to an arbitrary mu…
Unified Theory of Source Coding: Part II -- Multiterminal Problems
Soumya Jana
In the first paper of this two part communication, we solved in a unified framework a variety of two terminal source coding problems with noncooperative encoders, thereby consolida…
Unified Theory of Source Coding: Part I -- Two Terminal Problems
Soumya Jana
Since the publication of Shannon's theory of one terminal source coding, a number of interesting extensions have been derived by researchers such as Slepian-Wolf, Wyner, Ahlswede-K…