594 citations · 3.1k across the 88 of their papers we have counts for
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Perturbations of giant magnons and single spikes in
Soumya Bhattacharya, Sayan Kar, Kamal L. Panigrahi
Perturbations of giant magnons and single spikes in a dimensional background spacetime are analysed. Using the form of the giant magnon solution in the…
A new model with solitary waves: solution, stability and quasinormal modes
Surajit Basak, Poulami Dutta Roy, Sayan Kar
We construct solitary wave solutions in a dimensional massless scalar () field theory with a specially chosen potential . The equation governing perturbations about…
Perturbations of spiky strings in AdS3
Soumya Bhattacharya, Sayan Kar, Kamal L. Panigrahi
Perturbations of a class of semiclassical spiky strings in three dimensional Anti-de Sitter (AdS) spacetime, are investigated using the well-known Jacobi equations for small, norma…
Perturbations of spiky strings in flat spacetimes
Soumya Bhattacharya, Sayan Kar, Kamal L. Panigrahi
Perturbations of a class of semiclassical strings known today as spiky strings, are studied using the well-known Jacobi equations for small normal deformations of an embedded timel…
Radion stability and induced, on-brane geometries in an effective scalar-tensor theory of gravity
Sayan Kar, Sayantani Lahiri, Soumitra SenGupta
About a decade ago, using a specific expansion scheme, effective, on-brane scalar tensor theories of gravity were proposed by Kanno and Soda (Phys.Rev. {\bf D 66} 083506 ,(2002)) i…
On higher order geometric and renormalisation group flows
Kartik Prabhu, Sanjit Das, Sayan Kar
Renormalisation group flows of the bosonic nonlinear σ-model are governed, perturbatively, at different orders of α', by the perturbatively evaluated β--functions. In regions where…