4 papers
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 particle production and classical condensate in de Sitter spacetime
S. Biswas, I. Chowdhury
The complex time WKB approximation is an effective tool in studying particle production in curved spacetime. We use it in this work to understand the formation of classical condens…
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…