594 citations · 3.1k across the 88 of their papers we have counts for
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Can extra dimensional effects replace dark matter ?
Supratik Pal, Somnath Bharadwaj, Sayan Kar
In the braneworld scenario, the four dimensional effective Einstein equation has extra terms which arise from the embedding of the 3-brane in the bulk. We show that in this modifie…
Bulk phantom fields, increasing warp factors and fermion localisation
Ratna Koley, Sayan Kar
A bulk phantom scalar field (with negative kinetic energy) in a sine--Gordon type potential is used to generate an exact thick brane solution with an increasing warp factor. It is…
Scalar kinks and fermion localisation in warped spacetimes
Ratna Koley, Sayan Kar
Scalar kinks propagating along the bulk in warped spacetimes provide a thick brane realisation of the braneworld. We consider here, a class of such exact solutions of the full Eins…
Diffraction of light by interfering liquid surface waves
Tarun Kr. Barik, Anushree Roy, Sayan Kar
Interfering liquid surface waves are generated by electrically driven vertical oscillations of two or more equispaced pins immersed in a liquid (water). The corresponding intensity…
Quantifying energy condition violations in traversable wormholes
Sayan Kar, Naresh Dadhich, Matt Visser
The `theoretical' existence of traversable Lorentzian wormholes in the classical, macroscopic world is plagued by the violation of the well--known energy conditions of General Rela…