Results 121 to 130 of about 37,871 (243)
The Vacuum State of Primordial Fluctuations in Hybrid Loop Quantum Cosmology
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
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Coulomb gauge in one-loop quantum cosmology [PDF]
, 1994 Giampiero Esposito +1 more
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Loop Quantum Gravity Phenomenology: Linking Loops to Observational Physics
Symmetry, Integrability and Geometry: Methods and Applications, 2012 Research during the last decade demonstrates that effects originating on the Planck scale are currently being tested in multiple observational contexts.
Florian Girelli +2 more
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Cyclic universe from Loop Quantum Gravity
, 2015 We discuss how a cyclic model for the flat universe can be constructively derived from Loop Quantum Gravity. This model has a lower bounce, at small values of the scale factor, which shares many similarities with that of Loop Quantum Cosmology.
Cianfrani, Francesco +2 more
core +1 more source
Preinflationary Dynamics of Power-Law Potential in Loop Quantum Cosmology †
Universe, 2018 In this article, I mainly discuss the dynamics of the pre-inflationary Universe for the potential V ( ϕ ) ∝ ϕ n with n = 5 / 3 in the context of loop quantum cosmology, in which the big bang singularity is resolved by a non ...
M. Shahalam
doaj +1 more source
, 2008 We give an introduction into quantum cosmology with emphasis on its conceptual parts. After a general motivation we review the formalism of canonical quantum gravity on which discussions of quantum cosmology are usually based.
Kiefer, Claus, Sandhoefer, Barbara
core +1 more source
Loop quantum cosmology: IV. Discrete time evolution [PDF]
, 2001 Martin Bojowald
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Inflationary cosmology in modified gravity theories
, 2015 We review inflationary cosmology in modified gravity such as $R^2$ gravity with its extensions in order to generalize the Starobinsky inflation model. In particular, we explore inflation realized by three kinds of effects: modification of gravity, the ...
Bamba, Kazuharu, Odintsov, Sergei D.
core +2 more sources
Loop Quantum Gravity Vacuum with Nondegenerate Geometry
Symmetry, Integrability and Geometry: Methods and Applications, 2012 In loop quantum gravity, states of the gravitational field turn out to be excitations over a vacuum state that is sharply peaked on a degenerate spatial geometry.
Hanno Sahlmann, Tim Koslowski
doaj +1 more source
The Hubble operator in isotropic loop quantum cosmology [PDF]
, 2003 Golam Mortuza Hossain
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