1.2k citations · 10.7k across the 116 of their papers we have counts for
7 papers · 1 filter
Hysteresis and beats in loop quantum cosmology
John L. Dupuy, Parampreet Singh
Differences in pressure during expansion and contraction stages in cosmic evolution can result in a hysteresis-like phenomena in non-singular cyclic models sourced with scalar fiel…
Primordial power spectrum from the dressed metric approach in loop cosmologies
Bao-Fei Li, Parampreet Singh, Anzhong Wang
We investigate the consequences of different regularizations and ambiguities in loop cosmological models on the predictions in the scalar and tensor primordial spectrum of the cosm…
Some physical implications of regularization ambiguities in SU(2) gauge-invariant loop quantum cosmology
Klaus Liegener, Parampreet Singh
The way physics of loop quantum gravity is affected by the underlying quantization ambiguities is an open question. We address this issue in the context of loop quantum cosmology u…
New Loop Quantum Cosmology Modifications from Gauge-covariant Fluxes
Klaus Liegener, Parampreet Singh
Loop quantum cosmology is a symmetry reduced quantization of cosmological spacetimes based on loop quantum gravity. While it has been successful in resolution of various cosmologic…
Gauge-invariant bounce from loop quantum gravity
Klaus Liegener, Parampreet Singh
We present a gauge-invariant treatment of singularity resolution using loop quantum gravity techniques with respect to local SU(2) transformations. Our analysis reveals many novel…
Genericness of pre-inflationary dynamics and probability of the desired slow-roll inflation in modified loop quantum cosmologies
Bao-Fei Li, Parampreet Singh, Anzhong Wang
We study the evolution of spatially flat Friedmann-Lemaître-Robertson-Walker universe for chaotic and Starobinsky potentials in the framework of modified loop quantum cosmologies.…