54 citations · 54 across the 1 of their papers we have counts for
8 papers
Gravitational deflection of light in the Schwarzschild -de Sitter space time
Arunava Bhadra, Swarnadeep Biswas, Kabita Sarkar
Recent studies suggest that the cosmological constant affects the gravitational bending of photons although the orbital equation for light in Schwarzschild-de Sitter space time is…
The CWKB approach to non-reflecting potential and cosmological implications
S. Biswas, I. Chowdhury
We discuss the method of calculating the reflection coefficient using complex trajectory WKB (CWKB) approximation. This enables us to give an interpretation of non-reflecting natur…
The CWKB Method of Particle Production Near Chronology Horizon
S. Biswas, P. Misra, I. Chowdhury
In this paper we investigate the phenomenon of particle production of massles scalar field, in a model of spacetime where the chronology horizon could be formrd, using the method o…
The CWKB Method of Particle Production in Periodic Potential
S. Biswas, P. Misra, I. Chowdhury
In this work we study the particle production in time dependent periodic potential using the method of complex time WKB (CWKB) approximation. In the inflationary cosmology at the e…
Evolution of Dynamical Coupling in Scalar Tensor Theory from Noether Symmetry
B. Modak, S. Kamilya, S. Biswas
We present the gravitational coupling function in the vacuum scalar-tensor theory as allowed by the Noether symmetry. We also obtain some exact cosmological solutions in the…
Dirac Current in Expanding Spacetime
N. G. Sarkar, S. Biswas, A. Shaw
We study the behaviour of Dirac current in expanding spacetime with Schr{ö}dinger and de Sitter form for the evolution of the scale-factor. The study is made to understand the part…