594 citations · 3.1k across the 88 of their papers we have counts for
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Exact bound states in volcano potentials
Ratna Koley, Sayan Kar
Quantum mechanics in a one--parameter family of volcano potentials is investigated. After a discussion on their construction and classical mechanics, we obtain exact, normalisable…
Braneworlds in six dimensions: new models with bulk scalars
Ratna Koley, Sayan Kar
Six dimensional bulk spacetimes with 3-- and 4--branes are constructed using certain non--conventional bulk scalars as sources. In particular, we investigate the consequences of ha…
Path integrals and wavepacket evolution for damped mechanical systems
Dharmesh Jain, A. Das, Sayan Kar
Damped mechanical systems with various forms of damping are quantized using the path integral formalism. In particular, we obtain the path integral kernel for the linearly damped h…
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…