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5 papers · 2 filters
Five-dimensional warped product space-time with time-dependent warp factor and cosmology of the four-dimensional universe
Sarbari Guha, Subenoy Chakraborty
In this paper, we have studied a 5-dimensional warped product space-time with a time-dependent warp factor. This warp factor plays an important role in localizing matter to the 4-d…
Collapse of non-spherically symmetric scalar field distributions
Koyel Ganguly, Narayan Banerjee
In the present work the collapse scenario of some exact non-spherical models with a minimally coupled scalar field is studied. Scalar field collapse with planar as well as toroidal…
A Study of Phase Transition in Black Hole Thermodynamics
Ritabrata Biswas, Subenoy Chakraborty
This paper deals with five-dimensional black hole solutions in (a) Einstein-Maxwell-Gauss-Bonnet theory with a cosmological constant and (b)Einstein-Yang-Mills-Gauss-Bonnet theory…
Inhomogeneities in dusty universe - a possible alternative to dark energy?
S. Chatterjee
There have been of late renewed debates on the role of inhomogeneities to explain the observed late acceleration of the universe. We have looked into the problem analytically with…
Modeling galactic halos with predominantly quintessential matter
F. Rahaman, Peter K. F. Kuhfittig, K. Chakraborty +2
This paper discusses a new model for galactic dark matter by combining an anisotropic pressure field corresponding to normal matter and a quintessence dark energy field having a ch…