Publications (74)
Scale Factor Duality and the Energy Condition Inequalities
Sayan Kar
Radion stability and induced, on-brane geometries in an effective scalar-tensor theory of gravity
Sayan Kar, Sayantani Lahiri, Soumitra SenGupta
Cosmology with decaying tachyon matter
A. Das, Shashikant Gupta, Tarun Deep Saini +1
Evolution of geodesic congruences in a gravitationally collapsing scalar field background
Rajibul Shaikh, Sayan Kar, Anirvan DasGupta
Particle creation in the presence of a warped extra dimension
Suman Ghosh, Sayan Kar
Three dimensional Eddington--inspired Born--Infeld gravity: solutions
Soumya Jana, Sayan Kar
Born-Infeld cosmology with scalar Born-Infeld matter
Soumya Jana, Sayan Kar
Probing liquid surface waves, liquid properties and liquid films with light diffraction
Tarun Kr. Barik, Partha Roy Chaudhuri, Anushree Roy +1
Confinement of test particles in warped spacetimes
Suman Ghosh, Hemwati Nandan, Sayan Kar
On higher order geometric and renormalisation group flows
Kartik Prabhu, Sanjit Das, Sayan Kar
Gravitational lensing in braneworld gravity: formalism and applications
Supratik Pal, Sayan Kar
Stable two--brane models with bulk tachyon matter
A. Das, Sayan Kar, Soumitra SenGupta
Modelling galaxy halos using dark matter with pressure
Somnath Bharadwaj, Sayan Kar
Perturbations of spiky strings in flat spacetimes
Soumya Bhattacharya, Sayan Kar, Kamal L. Panigrahi
Geometry of deformations of branes in warped backgrounds
Supratik Pal, Sayan Kar
Static spherisymmetric solutions, gravitational lensing and perihelion precession in Einstein--Kalb--Ramond theory
Sayan Kar, Soumitra SenGupta, Saurabh Sur
Perturbations of spiky strings in AdS3
Soumya Bhattacharya, Sayan Kar, Kamal L. Panigrahi
A note on the Einstein equation in string theory
Sayan Kar
A novel braneworld model with a bulk scalar field
Ratna Koley, Sayan Kar
Bulk spacetimes for cosmological braneworlds with a time--dependent extra dimension
Suman Ghosh, Sayan Kar
STRINGS IN A WORMHOLE BACKGROUND
Sayan Kar
A simple mechanical analog of the field theory of tachyon matter
Sayan Kar
Focusing of timelike worldsheets in a theory of strings
Sayan Kar
Quantifying energy condition violations in traversable wormholes
Sayan Kar, Naresh Dadhich, Matt Visser
Scalar kinks and fermion localisation in warped spacetimes
Ratna Koley, Sayan Kar
Path integrals and wavepacket evolution for damped mechanical systems
Dharmesh Jain, A. Das, Sayan Kar
Can the rotation of the dark matter halo of our galaxy be detected through its effect on the cosmic microwave background polarisation?
Partha Nag, Somnath Bharadwaj, Sayan Kar
R=0 spacetimes and self-dual Lorentzian wormholes
Naresh Dadhich, Sayan Kar, Sailajananda Mukherji +1
Schild's Null Strings in Flat and Curved Backgrounds
Sayan Kar
Exact solutions in two-dimensional string cosmology with back reaction
Sukanta Bose, Sayan Kar
Focusing of branes in warped backgrounds
Sayan Kar
Classical and quantum mechanics of a particle on a rotating loop
Sayan Kar, Avinash Khare
The Generalised Raychaudhuri Equations : Examples
Sayan Kar
Gravitational lensing by scalar-tensor wormholes and the energy conditions
Rajibul Shaikh, Sayan Kar
Geodesics and geodesic deviation in a two-dimensional black hole
Ratna Koley, Supratik Pal, Sayan Kar
Ricci flow of unwarped and warped product manifolds
Sanjit Das, Kartik Prabhu, Sayan Kar
Generalised Raychaudhuri Equations for Strings and Membranes
Sayan Kar
Geodesic congruences in warped spacetimes
Suman Ghosh, Anirvan Dasgupta, Sayan Kar
Gravitational waves from quasinormal modes of a class of Lorentzian wormholes
S. Aneesh, Sukanta Bose, Sayan Kar
Traversable wormholes with arbitrarily small energy condition violations
Matt Visser, Sayan Kar, Naresh Dadhich
Asymmetrically warped R=0 braneworlds
Sayan Kar
Bach flows of product manifolds
Sanjit Das, Sayan Kar
The geometry of RG flows in theory space
Sayan Kar
Braneworlds in six dimensions: new models with bulk scalars
Ratna Koley, Sayan Kar
New classes of black hole spacetimes in 2+1 gravity
Sukanta Bose, Naresh Dadhich, Sayan Kar
Can extra dimensional effects replace dark matter ?
Supratik Pal, Somnath Bharadwaj, Sayan Kar
Evolving Lorentzian Wormholes
Sayan Kar, Deshdeep Sahdev
The Raychaudhuri equations: a brief review
Sayan Kar, Soumitra SenGupta
Wormholes, the weak energy condition, and scalar-tensor gravity
Rajibul Shaikh, Sayan Kar
Born-Infeld gravity coupled to Born-Infeld electrodynamics
Soumya Jana, Sayan Kar
Higher order geometric flows on three dimensional locally homogeneous spaces
Sanjit Das, Kartik Prabhu, Sayan Kar
Stringy black holes and energy conditions
Sayan Kar
Can extra dimensional effects allow wormholes without exotic matter?
Sayan Kar, Sayantani Lahiri, Soumitra SenGupta
Does a Kalb-Ramond field make spacetime optically active
Sayan Kar, Parthasarathi Majumdar, Soumitra Sengupta +1
de Sitter branes with a bulk scalar
Supratik Pal, Sayan Kar
Exact bound states in volcano potentials
Ratna Koley, Sayan Kar
Naked singularities in low energy, effective string theory
Sayan Kar
Diffraction of light by interfering liquid surface waves
Tarun Kr. Barik, Anushree Roy, Sayan Kar
Generalised Raychaudhuri equations for strings in the presence of an antisymmetric tensor field
Sayan Kar
Geometry of theory space and RG flows
Sayan Kar
Geodesic flows in rotating black hole backgrounds
Anirvan DasGupta, Hemwati Nandan, Sayan Kar
A note on spherically symmetric, static spacetimes in Kanno-Soda on-brane gravity
Sayan Kar, Sayantani Lahiri, Soumitra SenGupta
Can degenerate bound states occur in one dimensional quantum mechanics?
Sayan Kar, Rajesh R. Parwani
Splitting of degenerate states in one-dimensional quantum mechanics
Avik Dutt, Trisha Nath, Sayan Kar +1
The Ellis wormhole with `tachyon matter'
A. Das, Sayan Kar
Planetoid strings : solutions and perturbations
Sayan Kar, Swapna Mahapatra
Kinematics of trajectories in classical mechanics
Rajibul Shaikh, Sayan Kar, Anirvan DasGupta
Perturbative stability of catenoidal soap films
Soumya Jana, Sayan Kar
Kinematics of flows on curved, deformable media
Anirvan Dasgupta, Hemwati Nandan, Sayan Kar
Kinematics of geodesic flows in stringy black hole backgrounds
Anirvan Dasgupta, Hemwati Nandan, Sayan Kar
Cosmic optical activity from an inhomogeneous Kalb-Ramond field
Sayan Kar, Parthasarathi Majumdar, Soumitra SenGupta +1
Kinematics of deformable media
Anirvan Dasgupta, Hemwati Nandan, Sayan Kar
Born-Infeld gravity with a Brans-Dicke scalar
Soumya Jana, Sayan Kar
Bulk phantom fields, increasing warp factors and fermion localisation
Ratna Koley, Sayan Kar