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20012022
most citedNoether symmetry in the higher order gravity theory

55 citations

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hep-th2020★ 8 cited

Probing the early universe with a generalized action

Ranajit Mandal, Dalia Saha, Mohosin Alam +1

Possibly, the most general action in the background of isotropic and homogeneous space-time has been considered to study the quantum evolution of the early universe, apart from a c…

hep-th2018★ 21 cited

Early Universe with modified scalar-tensor theory of gravity

Ranajit Mandal, Chandramouli Sarkar, Abhik Kumar Sanyal

Scalar-tensor theory of gravity with non-minimal coupling is a fairly good candidate for dark energy, required to explain late-time cosmic evolution. Here we study the very early s…

hep-th2014★ 16 cited

Resolving the issue of branched Hamiltonian in modified Lanczos-Lovelock gravity

Soumendranath Ruz, Ranajit Mandal, Subhra Debnath +1

The Hamiltonian constraint Hc = NH = 0, defines a diffeomorphic structure on spatial manifolds by the lapse function N in general theory of relativity. However, it is not manifest…

hep-th2005★ 14 cited

Scalar tensor theory of gravity carrying a conserved current

Abhik Kumar Sanyal

A general scalar-tensor theory of gravity carries a conserved current for a trace free minimally coupled scalar field, under the condition that the potential of the nonminim…

hep-th2004★ 27 cited

Hamiltonian formulation of curvature squared action

Abhik Kumar Sanyal

It has been observed earlier that, in principle, it is possible to obtain a quantum mechanical interpretation of higher order quantum cosmological models in the spatially homogeneo…