17 citations · 24 across the 5 of their papers we have counts for
6 papers · 1 filter
Particle creation by a massless spin- field in a warped cosmological braneworld scenario
Suman Ghosh
Energy momentum tensor of a quantized massless bulk spin- field in five dimensional warped cosmological spacetimes is studied. The four dimensional part of our model r…
Renormalized stress tensor of a quantized massless scalar field in warped cosmological braneworld background
Suman Ghosh
Energy momentum tensor of a conformally coupled quantum scalar field in five dimensional warped cosmological spacetimes is studied. We look at situations where the four dimensional…
Time Evolution of Density Parameters for Matter and Dark Energy and their Interaction Term in Brans-Dicke Gravity
Sudipto Roy, Dipika Nandi, Sumana Ghosh +1
In the framework of Brans-Dicke (BD) theory, the first part of the present study determines the time dependence of BD parameter, energy density and equation of state (EoS) paramete…
Constrained field theories on spherically symmetric spacetimes with horizons
Karan Fernandes, Suman Ghosh, Amitabha Lahiri
We apply the Dirac-Bergmann algorithm for the analysis of constraints to gauge theories defined on spherically symmetric black hole backgrounds. We find that the constraints for a…
Creation of spin particles and renormalization in FLRW spacetime
Suman Ghosh
Within the framework of adiabatic regularization, we present a simple formalism to calculate number density and renormalized energy-momentum density of spin 1/2 particles in spatia…
Bulk spacetimes for cosmological braneworlds with a time--dependent extra dimension
Suman Ghosh, Sayan Kar
We explore the possibilities of constructing bulk spacetimes in five dimensions for warped braneworld models with a spatially flat Friedmann-Robertson-Walker (FRW) line element on…