24 citations · 108 across the 8 of their papers we have counts for
5 papers · 1 filter
History of cosmic evolution with modified Gauss-Bonnet-dilatonic coupled term
Subhra Debnath, Soumendra Nath Ruz, Ranajit Mandal +1
Gauss-Bonnet-dilatonic coupling in four dimension plays an important role to explain late time cosmic evolution. However, this term is an outcome of low energy string effective act…
Validating variational principle for higher order theory of gravity
Soumendranath Ruz, Kaushik Sarkar, Nayem Sk +1
Metric variation of higher order theory of gravity requires to fix the Ricci scalar in addition to the metric tensor at the boundary. Fixing Ricci scalar at the boundary implies th…
Euclidean wormholes with minimally coupled scalar fields
Soumendranath Ruz, Subhra Debnath, Abhik Kumar Sanyal +1
A detailed study of quantum and semiclassical Euclidean wormholes for Einstein's theory with a minimally coupled scalar field has been performed for a class of potentials. Massless…
Singularity free stars in (2+1) dimensions
Farook Rahaman, Ayan Banerjee, Irina Radinschi +2
We present some new types of non-singular model for anisotropic stars with constant and variable based on the Krori and Barua (KB) metric in dimensions. The solutio…
Canonical formulation of curvature squared action in the presence of lapse function
Abhik Kumar Sanyal, Subhra Debnath, Soumendranath Ruz
Lapse function appears as Lagrange multiplier in Einstein-Hilbert action and its variation leads to the (0 0) equation of Einstein, which corresponds to the Hamiltonian constraint…