197 citations · 251 across the 3 of their papers we have counts for
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gr-qc2008★ 17 cited
Bulk spacetimes for cosmological braneworlds with a time--dependent extra dimension
Suman Ghosh, Sayan Kar
We explore the possibilities of constructing bulk spacetimes in five dimensions for warped braneworld models with a spatially flat Friedmann-Robertson-Walker (FRW) line element on…
gr-qc2008★ 30 cited
Kinematics of geodesic flows in stringy black hole backgrounds
Anirvan Dasgupta, Hemwati Nandan, Sayan Kar
We study the kinematics of timelike geodesic congruences in two and four dimensions in spacetime geometries representing stringy black holes. The Raychaudhuri equations for the kin…
gr-qc2006★ 197 cited
The Raychaudhuri equations: a brief review
Sayan Kar, Soumitra SenGupta
We present a brief review on the Raychaudhuri equations. Beginning with a summary of the essential features of the original article by Raychaudhuri and subsequent work of numerous…