Cosmological inflation driven by holonomy corrections of loop quantum cosmology

Journal Article · Mon Mar 15 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.063526· OSTI ID:21409388

Dahwei, Chiou; Kai, Liu ^[1]

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1. Department of Physics, Beijing Normal University, Beijing 100875 (China)

At the level of heuristic effective dynamics, we investigate the cosmological inflation with holonomy corrections of loop quantum cosmology in the k=0 Friedmann-Robertson-Walker model with a single inflaton field subject to a simple potential. In the symmetric bouncing scenario of loop quantum cosmology, the condition for occurrence of the quantum bounce naturally and uniquely fixes the initial conditions at the bouncing epoch. Around the quantum bounce, the Universe undergoes a short superinflationary phase, which drives the inflaton field to its potential hill and thus sets the proper initial conditions for the standard slow-roll inflation. Between the superinflation and the standard inflation, there is a noninflationary phase, which violates the slow-roll condition. The violation of slow roll is expected to give some suppression on the low angular power spectrum of the cosmic microwave background and different orders of holonomy corrections shall yield different suppressions.

• OSTI ID: 21409388
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 6 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
CORRECTIONS
COSMOLOGICAL MODELS
COSMOLOGY
ELECTROMAGNETIC RADIATION
INFLATIONARY UNIVERSE
MATHEMATICAL MODELS
MICROWAVE RADIATION
RADIATIONS
RELICT RADIATION
SIMULATION
SPECTRA
SYMMETRY
UNIVERSE