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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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7 papers · 2 filters
Rebounce and Black hole formation in a Gravitational Collapse Model with Vanishing Radial Pressure
Ashutosh Mahajan, Pankaj S. Joshi
We examine spherical gravitational collapse of a matter model with vanishing radial pressure and non-zero tangential pressure. It is seen analytically that the collapsing cloud eit…
Quantum mechanics without spacetime: a case for noncommutative geometry
T. P. Singh
Quantum mechanics in its presently known formulation requires an external classical time for its description. A classical spacetime manifold and a classical spacetime metric are pr…
Gravitational Collapse of Inhomogeneous Dust in (2+1) Dimensions
Sashideep Gutti
We examine the gravitational collapse of spherically symmetric inhomogeneous dust in (2+1) dimensions, with cosmological constant. We obtain the analytical expressions for the inte…
Quantum evaporation of a naked singularity
Rituparno Goswami, Pankaj S. Joshi, Parampreet Singh
We investigate here quantum effects in gravitational collapse of a scalar field model which classically leads to a naked singularity. We show that non-perturbative semi-classical m…
A black hole mass threshold from non-singular quantum gravitational collapse
Martin Bojowald, Rituparno Goswami, Roy Maartens +1
Quantum gravity is expected to remove the classical singularity that arises as the end-state of gravitational collapse. To investigate this, we work with a toy model of a collapsin…
Gravitational collapse in asymptotically Anti-de Sitter/de Sitter backgrounds
T. Arun Madhav, Rituparno Goswami, Pankaj S. Joshi
We study here the gravitational collapse of a matter cloud with a non-vanishing tangential pressure in the presence of a non-zero cosmological term. Conditions for bounce and singu…
Cosmic Censorship in Higher dimension II
Ashutosh Mahajan, Rituparno Goswami, Pankaj S. Joshi
Generalizing earlier results on dust collapse in higher dimensions, we show here that cosmic censorship can be restored in gravitational collapse with tangential pressure present i…