Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Saini, Sahil"'
We provide a quantization of the Schwarzschild spacetime in the presence of a cosmological constant, based on midisuperspace methods developed in the spherically symmetric sector of loop quantum gravity, using in particular the 'improved dynamics' sc
Externí odkaz:
http://arxiv.org/abs/2408.04925
Autor:
Kothawala, Dawood, Saini, Sahil
The workshop was organized at IUCAA on Oct 30 - Nov 3, 2023 as a compact discussion and discourse meeting with a threadbare exposition and discussion of the various aspects and the questions arising. It was occasioned by the visit of Professor Hakan
Externí odkaz:
http://arxiv.org/abs/2402.15543
In classical Bianchi-I spacetimes, underlying conditions for what dictates the singularity structure - whether it is anisotropic shear or energy density, can be easily determined from the generalized Friedmann equation. However, in non-singular bounc
Externí odkaz:
http://arxiv.org/abs/2210.07257
Publikováno v:
Phys. Rev. D 103, 066020 (2021)
A union of matter bounce and Ekpyrotic scenarios is often studied in an attempt to combine the most promising features of these two models. Since non-perturbative quantum geometric effects in loop quantum cosmology (LQC) result in natural bouncing sc
Externí odkaz:
http://arxiv.org/abs/2012.10462
Autor:
Ratheesh, P., Anbarasu, Priyanka, Bhujbal, Pankaj, Gaikwad, Lalit, Saini, Sahil, Dubey, Sakshi, Kumar Gond, Praveen, Meshram, Samruddhi, Viswanatha Rao, A.N., Dhirhe, Devnath
Publikováno v:
In Optical Fiber Technology October 2023 80
Autor:
Saini, Sahil, Singh, Parampreet
Publikováno v:
Class. Quantum Grav. 36, 105010 (2019)
Von Neumann stability analysis of quantum difference equations in loop quantized spacetimes has often proved useful to understand viability of quantizations and whether general relativistic description is recovered at small spacetime curvatures. We u
Externí odkaz:
http://arxiv.org/abs/1901.01279
Autor:
Saini, Sahil, Singh, Parampreet
Publikováno v:
Class.Quant.Grav. 36 (2019) 105014
Different regularizations of the Hamiltonian constraint in loop quantum cosmology yield modified loop quantum cosmologies, namely mLQC-I and mLQC-II, which lead to qualitatively different Planck scale physics. We perform a comprehensive analysis of r
Externí odkaz:
http://arxiv.org/abs/1812.08937
Autor:
Saini, Sahil, Singh, Parampreet
We study the generic resolution of strong singularities in loop quantized effective Bianchi-IX spacetime in two different quantizations - the connection operator based `A' quantization and the extrinsic curvature based `K' quantization. We show that
Externí odkaz:
http://arxiv.org/abs/1712.09474
Autor:
Saini, Sahil, Singh, Parampreet
Generic resolution of singularities and geodesic completeness in the loop quantization of Bianchi-II spacetimes with arbitrary minimally coupled matter is investigated. Using the effective Hamiltonian approach, we examine two available quantizations:
Externí odkaz:
http://arxiv.org/abs/1707.08556
Recently a consistent non-perturbative quantization of the Schwarzschild interior resulting in a bounce from black hole to white hole geometry has been obtained by loop quantizing the Kantowski-Sachs vacuum spacetime. As in other spacetimes where the
Externí odkaz:
http://arxiv.org/abs/1707.07333