Results 21 to 30 of about 77,468 (282)
Introduction to Loop Quantum Cosmology [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2012 This is an introduction to loop quantum cosmology (LQC) reviewing mini- and midisuperspace models as well as homogeneous and inhomogeneous effective dynamics.
Kinjal Banerjee +2 more
doaj +7 more sources
Computation of non-Gaussianity in loop quantum cosmology [PDF]
The Fifteenth Marcel Grossmann Meeting, 2022 We summarize our investigations of the second-order perturbations in loop quantum cosmology (LQC). We shall discuss, primarily, two aspects. Firstly, whether the second-order contributions arising from the cosmic bounce, occurring at Planck scale, could ...
V. Sreenath +2 more
openalex +2 more sources
Inflation in loop quantum cosmology [PDF]
Physical Review D, 2018 We develop a consistent analytic approach to determine the conditions under which slow roll inflation can arise when the inflaton is the same scalar field that is responsible for the bounce in Loop Quantum Cosmology (LQC).
A. Bhardwaj, E. Copeland, J. Louko
semanticscholar +4 more sources
Mathematical Structure of Loop Quantum Cosmology: Homogeneous Models [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2013 The mathematical structure of homogeneous loop quantum cosmology is analyzed, starting with and taking into account the general classification of homogeneous connections not restricted to be Abelian.
Martin Bojowald
doaj +2 more sources
The Semiclassical Limit of Loop Quantum Cosmology [PDF]
Classical and Quantum Gravity, 2001 The continuum and semiclassical limits of isotropic, spatially flat loop quantum cosmology are discussed, with an emphasis on the role played by the Barbero-Immirzi parameter \gamma in controlling space-time discreteness.
Ashtekar A +20 more
core +6 more sources
Loop Quantum Cosmology I: Kinematics [PDF]
Classical and Quantum Gravity, 1999 The framework of quantum symmetry reduction is applied to loop quantum gravity with respect to transitively acting symmetry groups. This allows to test loop quantum gravity in a large class of minisuperspaces and to investigate its features - e.g.
Ashtekar A +22 more
core +3 more sources
The Vacuum State of Primordial Fluctuations in Hybrid Loop Quantum Cosmology [PDF]
Universe, 2018 We investigate the role played by the vacuum of the primordial fluctuations in hybrid Loop Quantum Cosmology. We consider scenarios where the inflaton potential is a mass term and the unperturbed quantum geometry is governed by the effective dynamics of ...
Beatriz Elizaga Navascués +2 more
doaj +2 more sources
Inflationary Cosmology and Oscillating Universes in Loop Quantum Cosmology [PDF]
International Journal of Modern Physics A, 2004 We study oscillatory universes within the context of Loop Quantum Cosmology. We make a comparative study of flat and positively curved universes sourced by scalar fields with either positive or negative potentials.
Bojowald M. +9 more
core +3 more sources
A novel link between Wheeler-DeWitt quantization and (effective) loop quantum cosmology
Physics Letters BIt is shown that several prescriptions for the effective continuum limit of the flat Friedmann-Lemaitre-Robertson-Walker loop quantum cosmology can be understood as the exact classical limit of the Wheeler-DeWitt quantization of certain dynamical systems,
Abraham Espinoza-García
doaj +2 more sources
On the evolution of the volume in Loop Quantum Cosmology [PDF]
Classical and Quantum Gravity, 2023 Abstract The dynamics of the expectation value of the volume is one of the key ingredients behind the replacement of the Big Bang singularity by a bounce in Loop Quantum Cosmology. As such, it is of great importance that this quantity is mathematically well-defined in the space of physical states of the theory.
Beatriz Elizaga Navascués
openalex +3 more sources