7 papers
Dynamical Selection of Horizon-BMS Goldstone Modes in Evaporating Black Holes
Nihar Ranjan Ghosh, Malay K. Nandy
We investigate the dynamics of horizon soft degrees of freedom associated with near-horizon BMS supertranslations in an evaporating Vaidya-Schwarzschild black hole spacetime. Consi…
Near-Horizon BMS Symmetry and Implications on Black Hole Entropy
Nihar Ranjan Ghosh, Malay K. Nandy
Thermodynamic significance of near-horizon symmetries remains an important open question in black hole physics, particularly in the context of black hole evaporation and informatio…
BMS transformed Quantum String Dynamics near a Black Hole
Nihar Ranjan Ghosh, Malay K. Nandy
Asymptotic symmetries are expected to leave subtle but physically meaningful imprints on quantum probes of gravity, yet their manifestation in near-horizon dynamics remains incompl…
Constraints on BMS Transformations via Energy Conditions and implications on black hole geometry
Nihar Ranjan Ghosh, Malay K. Nandy
We investigate whether the formally infinite-dimensional supertranslation sector of the Bondi-Metzner-Sachs (BMS) group remains fully physically admissible once classical energy co…
Asymptotic Generation of Kerr Geometry from Schwarzschild via BMS Supertranslations
Nihar Ranjan Ghosh, Malay K. Nandy
The Bondi-van der Burg-Metzner-Sachs (BMS) group, as the asymptotic symmetry group of asymptotically flat spacetimes, plays a central role in connecting infrared structures of grav…
Nonlinear Dynamics of the Inner Horizon in Reissner-Nordström Black Holes: Insights into Mass Inflation
Nihar Ranjan Ghosh, Malay K. Nandy
The well-known instability of the inner horizon of a Reissner-Nordström black hole, first suggested by Simpson and Penrose, although studied extensively, has remained illusive so f…
Mass Superinflation from Enhanced Cauchy Horizon Singularity in a Reissner-Nordström Black Hole
Nihar Ranjan Ghosh, Malay K. Nandy
Ever since Penrose and Simpson contradicted Novikov's prediction that an infalling passenger would emerge into an asymptotically flat universe, there have been a continued interest…