11 citations · 18 across the 6 of their papers we have counts for
6 papers
Aspects of Quantum Cosmology
Sachin Pandey
In this thesis, we try to resolve the alleged problem of non-unitarity for various anisotropic cosmological models. Using Wheeler-DeWitt formulation, we quantized the anisotropic m…
Unitarity in quantum cosmology: symmetries protected and violated
Sachin Pandey, Narayan Banerjee
This work deals with the violation or retention of symmetries associated with the self-adjoint extension of the Hamiltonian for homogeneous but anisotropic Bianchi I cosmological m…
Anisotropic n-dimensional quantum cosmological model with fluid
Sachin Pandey
In the present work, we discuss the Wheeler-DeWitt quantization scheme for an n-dimensional anisotropic cosmological model with a perfect fluid in presence of a massless scalar fie…
Equivalence of Einstein and Jordan frames in quantized cosmological models
Sachin Pandey, Sridip Pal, Narayan Banerjee
The present work shows that the mathematical equivalence of Jordan frame and its conformally transformed version, the Einstein frame, so far as Brans-Dicke theory is concerned, sur…
Equivalence of Jordan and Einstein frames at the quantum level
Sachin Pandey, Narayan Banerjee
It is shown that the Jordan frame and its conformally transformed version, the Einstein frame of nonminimally coupled theories of gravity, are actually equivalent at the quantum le…
Unitary evolution for anisotropic quantum cosmologies: models with variable spatial curvature
Sachin Pandey, Narayan Banerjee
Contrary to the general belief, there has recently been quite a few examples of unitary evolution of quantum cosmological models. The present work gives more examples, namely Bianc…