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gr-qc2025
Universality and Criticality in Mass-less Scalar Field Collapse
Koushiki, Rituparno Goswami, Pankaj S. Joshi
In this paper, we observe the collapse of a mass-less scalar field covariantly. We show that the strengths of the collapsing and dispersing modes of this scalar field will decide w…
gr-qc2025
Apparent horizon and causal structure of spacetime singularities
Koushiki, Pankaj S. Joshi
A major issue in general relativity and blackhole physics today is to determine the conditions when the spacetime singularities forming as end-states of gravitational collapse are…
gr-qc2025
On Formation of Primordial Naked Singularities
Koushiki, Pankaj S. Joshi, Sudip Bhattacharyya
The density fluctuations in the nearly homogeneous background in the very early universe are argued to be the origin of the cosmic structures we observe in our present universe. Al…