50 citations · 97 across the 8 of their papers we have counts for
8 papers
On indefinite integral ternary quadratic forms
Alexander Gamburd, Amit Ghosh, Peter Sarnak +1
We resolve two problems pertaining to indefinite integral ternary quadratic forms, one highlighted by Margulis and the other initiated by Serre, both from 1990. To do so we develop…
Modified first law of charged dilaton black hole
Pabitra Tripathy, Amit Ghosh
We investigate the thermodynamics of a charged dilaton black hole arising from Einstein-Maxwell-dilaton theory, where the dilaton couples exponentially to the Maxwell field via a d…
Quantum and classical areas of black hole thermodynamics
A. Ghosh, P. Mitra
Most calculations of black hole entropy in loop quantum gravity indicate a term proportional to the area eigenvalue A with a correction involving the logarithm of A. This violates…
Black hole state counting in loop quantum gravity
A. Ghosh, P. Mitra
The two ways of counting microscopic states of black holes in the U(1) formulation of loop quantum gravity, one counting all allowed spin network labels j,m and the other only m la…
Fine-grained state counting for black holes in loop quantum gravity
A. Ghosh, P. Mitra
A state of a black hole in loop quantum gravity is given by a distribution of spins on punctures on the horizon. The distribution is of the Boltzmann type, with the area playing th…
Tunnelling from black holes and tunnelling into white holes
Bhramar Chatterjee, A. Ghosh, P. Mitra
Hawking radiation is nowadays being understood as tunnelling through black hole horizons. Here, the extension of the Hamilton-Jacobi approach to tunnelling for non-rotating and rot…