https://doi.org/10.1140/epjc/s10052-019-6760-1
Regular Article - Theoretical Physics
Renormalized stress tensor of a quantized massless scalar field in warped cosmological braneworld background
Department of Physics, Indira Gandhi National Tribal University, Amarkantak, MP, 484887, India
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Received:
23
November
2018
Accepted:
7
March
2019
Published online:
15
March
2019
Abstract
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 part represents a cosmological thick brane and the scale of the extra dimension is time dependent. Renormalization of the components of the energy momentum tensor is achieved using adiabatic regularization method. The resulting energy and pressure densities explicitly show the effects of warping and the dynamic extra dimension on the created matter. We discussed how the created matter may accumulate to form thick branes along the extra dimension.
© The Author(s), 2019
