18 citations · 88 across the 9 of their papers we have counts for
9 papers
New-born strings are tensionless
Sudip Karan, Bibhas Ranjan Majhi
We report a physical origin of tensionless strings, obtained by formulating string dynamics in finite-lifetime settings for the first time. Departing from the conventional paradigm…
A time-like window into tensionless worldsheets
Sudip Karan, Bibhas Ranjan Majhi
Rindler worldsheets are well known to transition into a tensionless regime in the infinite acceleration limit, acquiring an emergent Carrollian structure. In this work, we uncover…
Logarithmic correction to the entropy of a Kerr-Newman family of black holes in -charged STU supergravity models
Sudip Karan, Gurmeet Singh Punia, Surajit Biswas
The leading quantum-gravitational correction to the black hole entropy is known to be a universal logarithmic term. In this study, we investigate the logarithmic corrections for th…
Logarithmic correction to black hole entropy in universal low-energy string theory models
Sudip Karan, Gurmeet Singh Punia
We calculate the logarithmic correction to the entropy of asymptotically flat and AdS black holes (rotating, non-rotating, charged, and uncharged) embedded in Einstein-Maxwell-dila…
Generalized Einstein-Maxwell theory: Seeley-DeWitt coefficients and logarithmic corrections to the entropy of extremal and non-extremal black holes
Sudip Karan, Binata Panda
We present a consolidated manual of Euclidean gravity approaches for finding the logarithmic corrections to the entropy of the full Kerr-Newman family of black holes in both extrem…
Logarithmic corrections to black hole entropy in matter coupled Einstein-Maxwell supergravity
Sudip Karan, Binata Panda
We calculate the first three Seeley-DeWitt coefficients for fluctuation of the massless fields of an Einstein-Maxwell supergravity theory (EMSGT) distributed into d…
Logarithmic correction to the entropy of extremal black holes in Einstein-Maxwell supergravity
Gourav Banerjee, Sudip Karan, Binata Panda
We study one-loop covariant effective action of \say{non-minimally coupled} , Einstein-Maxwell supergravity theory by heat kernel tool. By fluctuating the fiel…
Seeley-DeWitt Coefficients in Einstein-Maxwell Supergravity Theory and Logarithmic Corrections to Extremal Black Hole Entropy
Sudip Karan, Gourav Banerjee, Binata Panda
We investigate the heat kernel method for one-loop effective action following the Seeley-DeWitt expansion technique of heat kernel with Seeley-DeWitt coefficients. We also review a…
General heat kernel coefficients for massless free spin-3/2 Rarita-Schwinger field
Sudip Karan, Shashank Kumar, Binata Panda
We review the general heat kernel method for the Dirac spinor field as an elementary example in any arbitrary background. We, then compute the first three Seeley-DeWitt coefficient…