arXiv subjects

Shibaji Halder

Publications and source records attributed to Shibaji Halder.

3 recordsLinked to original sources

arXiv2019

Spherically symmetric wormhole solutions in a general anisotropic matter field

The present work is an attempt to find possible traversable wormhole solutions in static spherically symmetric space-time supported by anisotropic matter field. Part of the work could be considered as a generalization of the work in Phys. Lett. B 757 (2016), 130 in the sense that it extends the work done therein. The paper provides several examples of wormholes in anisotropic pressure and provides general mechanisms for finding them. Finally the work examines the energy conditions corresponding to suggested wormhole solutions.

gr-qc↗

arXiv2019

Wormhole Solutions in Rastall Gravity Theory

The present work looks for new wormhole solutions in the non conservative Rastall gravity. Although Rastall gravity is considered to be a higher dimensional gravity, the actual diversion from general relativity essentially happens due to a modification in the corresponding matter tensor part. Thus it would be interesting to find out if such non minimal coupling has any effect on the traversable wormholes and their corresponding energy conditions.

gr-qc↗

arXiv2017

Evolving Cosmic Scenario in Modified Chaplygin Gas with Adiabatic Matter Creation

Modified Chaplygin Gas has been successful in describing the cosmic history of the universe from radiation to $Λ$CDM in standard cosmology, while particle creation mechanism in nonlinear thermodynamics can be used to explain inflation as well as late time acceleration. The present work is an attempt to explore the possibilities of obtaining an alternative explanations to cosmic evolution when modified Chaplygin gas is used in the context of particle creation mechanism.

gr-qc↗