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Ekpyrotic loop quantum cosmology [PDF]
11 pages, v2: Clarifications and references ...
openaire +4 more sources
The Quantum Configuration Space of Loop Quantum Cosmology [PDF]
The article gives an account of several aspects of the space known as the Bohr compactification of the line, featuring as the quantum configuration space in loop quantum cosmology, as well as of the corresponding configuration space realization of the so-called polymer representation.
arxiv +1 more source
Non-Gaussianity in loop quantum cosmology [PDF]
Minor updates: current version matches the accepted PRD ...
V. Sreenath+4 more
openaire +4 more sources
Causal loop quantum cosmology in momentum space [PDF]
We shall show that it is possible to make a causal interpretation of loop quantum cosmology using the momentum as the dynamical variable. We shall show that one can derive Bohmian trajectories. For a sample cosmological solution with cosmological constant, the trajectory is plotted.
arxiv +1 more source
Enemies: uneasy accompaniments in late life Ennemis : accompagnements de fin de vie difficiles
Against a phenomenological orientation to ageing as path or course, a contrastive frame is offered around a figure termed the enemy. Four distinctive ethnographic fragments are utilized: (1) a Polish‐Jewish migrant to Canada in her late eighties who listens continually to the radio and worries over the malign forces in the world that the radio ...
Lawrence Cohen
wiley +1 more source
Perturbations in loop quantum cosmology
The era of precision cosmology has allowed us to accurately determine many important cosmological parameters, in particular via the CMB. Confronting Loop Quantum Cosmology with these observations provides us with a powerful test of the theory. For this to be possible we need a detailed understanding of the generation and evolution of inhomogeneous ...
Ivan Agullo+2 more
openaire +3 more sources
Observational Exclusion of a Consistent Quantum Cosmology Scenario
It is often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations.
Barrau, Aurelien+3 more
core +3 more sources
Phenomenology of loop quantum cosmology [PDF]
After introducing the basic ingredients of Loop Quantum Cosmology, I will briefly discuss some of its phenomenological aspects. Those can give some useful insight about the full Loop Quantum Gravity theory and provide an answer to some long-standing questions in early universe cosmology.
openaire +2 more sources
Quantization ambiguities and bounds on geometric scalars in anisotropic loop quantum cosmology [PDF]
We study quantization ambiguities in loop quantum cosmology that arise for space-times with non-zero spatial curvature and anisotropies. Motivated by lessons from different possible loop quantizations of the closed Friedmann-Lemaitre-Robertson-Walker ...
Singh, Parampreet, Wilson-Ewing, Edward
core +3 more sources
Loop Quantum Cosmology: A cosmological theory with a view [PDF]
Loop Quantum Gravity is a background independent, nonperturbative approach to the quantization of General Relativity. Its application to models of interest in cosmology and astrophysics, known as Loop Quantum Cosmology, has led to new and exciting views of the gravitational phenomena that took place in the early universe, or that occur in spacetime ...
openaire +4 more sources