36 citations · 67 across the 4 of their papers we have counts for
4 papers
Spherically symmetric scalar field collapse
Koyel Ganguly, Narayan Banerjee
It is shown that a scalar field, minimally coupled to gravity may have collapsing modes even when the energy condition is violated, that is, for . This result may be usef…
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…
Generalised scalar-tensor theory and the cosmic acceleration
Narayan Banerjee, Koyel Ganguly
In this paper it has been shown that a simple functional form of in a generalised scalar tensor theory can drive the present cosmic acceleration without any quintessence fie…
Chameleon field and the late time acceleration of the universe
Narayan Banerjee, Sudipta Das, Koyel Ganguly
In the present work, it is shown that a chameleon scalar field having a nonminimal coupling with dark matter can give rise to a smooth transition from a decelerated to an accelerat…