12 citations · 17 across the 5 of their papers we have counts for
5 papers
Inflation from Covariant Signature Change: A Geometric Mechanism
Raghvendra Singh, Sergey Bondarenko
We present a covariant mechanism in which a smooth change of metric signature, from a Euclidean to a Lorentzian regime, drives a finite interval of accelerated expansion. The trans…
Modeling an internal structure of a black hole using a thermodynamic quasi-particle model
Sergey Bondarenko, Dima Cheskis, Raghvendra Singh
We develop an effective thermodynamic model for a black-hole interior composed of scalar quasiparticles. The interior is represented by two regions: a dense core and a surrounding…
Decoherence due to Spacetime Curvature
Raghvendra Singh, Kabir Khanna, Dawood Kothawala
There has been considerable interest over the past years in investigating the role of gravity in quantum phenomenon such as entanglement and decoherence. In particular, gravitation…
Covariant formulation of Generalised Uncertainty Principle
Raghvendra Singh, Dawood Kothawala
We present a formulation of the generalised uncertainty principle based on commutator between position and momentum operators defined in a c…
Geometric aspects of covariant Wick rotation
Raghvendra Singh, Dawood Kothawala
We discuss the generic geometric properties of metrics constructed from Lorentzian metric and a nowhere vanishing, hypersurface orthogonal, timelike ve…