On the oscillation-driven cosmological expansion at the post-inflationary stage

The dynamics of the inflaton scalar field oscillating around a minimum of singular potentials in the expanding Universe is studied. Asymptotic formulas are obtained, describing the cosmological expansion at late times. The problem of stability of the considered oscillanions as well as a related phen...

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Veröffentlicht in:	Gravitation & cosmology 2017, Vol.23 (1), p.35-40
Hauptverfasser:	Koutvitsky, V. A., Maslov, E. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astrophysics and Astroparticles Asymptotic series Classical and Quantum Gravitation Expanding universe theory Observations and Techniques Physics Physics and Astronomy Quantum Physics Relativity Theory Universe
Online-Zugang:	Volltext
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Zusammenfassung:	The dynamics of the inflaton scalar field oscillating around a minimum of singular potentials in the expanding Universe is studied. Asymptotic formulas are obtained, describing the cosmological expansion at late times. The problem of stability of the considered oscillanions as well as a related phenomenon of field fragmentation are briefly discussed.
ISSN:	0202-2893 1995-0721
DOI:	10.1134/S0202289317010078