160 citations · 619 across the 20 of their papers we have counts for
4 papers · 1 filter
The third conformer of graphane: A first principles DFT based study
A. Bhattacharya, S. Bhattacharya, C. Majumder +1
We propose, on the basis of our first principles density functional based calculations, a new isomer of graphane, in which the C-H bonds of a hexagon alternate in 3-up, 3-down fash…
Brans-Dicke Wormhole Revisited -- II
Ramil Izmailov, Amrita Bhattacharya, Kamal K. Nandi
In a recent paper [arXiv:0910.1109], a wormhole range in the Jordan frame, -3/2<ω<-4/3 for the vacuum Brans-Dicke Class I solution was derived. On general grounds and under certain…
Upper Limit on the Size of Galactic Halo via Hamiltonian Approach
Amrita Bhattacharya, Ruslan Isaev, K. B. Vijayakumar +1
Using the approach of autonomous Hamiltonian dynamical system, we attempt to estimate the as yet unknown upper limit on the size of the galactic halo surrounding galaxies (lenses).…
The Vacuole Model: New Terms in the Second Order Deflection of Light
Amrita Bhattacharya, Guzel M. Garipova, Ettore Laserra +2
The present paper is an extension of a recent work (Bhattacharya et al. 2010) to the Einstein-Strauss vacuole model with a cosmological constant, where we work out the light deflec…