82 citations · 956 across the 44 of their papers we have counts for
8 papers · 1 filter
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…
Quantized Brans Dicke Theory: Phase Transition and Strong Coupling (Large ) Limit & General Relativity
Sridip Pal
We show that Friedmann-Robertson-Walker (FRW) geometry with flat spatial section in quantized (Wheeler deWitt quantization) Brans Dicke (BD) theory reveals a rich phase structure o…
Zeno-Gravity Correspondence: Zeno's Dichotomy Paradox and Gravitational red-shift near Event Horizon
Sridip Pal, Benjamin Grinstein
We relate Zeno's Dichotomy paradox with gravitational red-shift near event horizon in a spherically symmetric space-time. A dictionary of this connection, henceforth called as Zeno…
Anisotropic models are unitary: A rejuvenation of standard quantum cosmology
Sridip Pal, Narayan Banerjee
The present work proves that the folk-lore of the pathology of non-conservation of probability in quantum anisotropic models is wrong. It is shown in full generality that all opera…
Unitary evolution for a quantum Kantowski-Sachs cosmology
Sridip Pal, Narayan Banerjee
It is shown that like Bianchi I, V and IX models, a Kantowski-Sachs cosmological model also allows a unitary evolution on quantization. It has also been shown that this unitarity i…
Physical Aspects of Unitary evolution of Bianchi-I Quantum Cosmological Model
Sridip Pal
In this work, we study some physical aspects of unitary evolution of Bianchi-I model. In particular, we study the behavior of the volume and the scale factor as a function of time…
Restoring unitarity in anisotropic quantum cosmological models
Sridip Pal, Narayan Banerjee
The present work shows that a properly chosen ordering of operators can restore unitarity in anisotropic quantum cosmological models. Bianch V and Bianchi IX models with a perfect…
Addressing the issue of non-unitarity in anisotropic quantum cosmology
Sridip Pal, Narayan Banerjee
In the present work we show that the widely believed pathology of the non-unitarity of anisotropic quantum cosmological models cannot be a generic problem. We exhibit a non trivial…