Result: Kink instability and stabilization of the Friedmann universe with scalar fields
Title:
Kink instability and stabilization of the Friedmann universe with scalar fields
Authors:
Source:
Physics letters. Section B. 607(1-2):8-16
Publisher Information:
Amsterdam: Elsevier Science, 2005.
Publication Year:
2005
Physical Description:
print, 24 ref
Original Material:
INIST-CNRS
Subject Terms:
Theoretical physics, Physique théorique, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Generalites, General, Relativité générale et gravitation, General relativity and gravitation, Systèmes autogravitants; milieux continus et champs classiques en espace-temps courbe, Self-graviting systems; continuous media and classical fields in curved spacetime, Espace-temps d'einstein-maxwell, espace-temps avec fluides, rayonnement ou champs classiques, Einstein-maxwell spacetimes, spacetimes with fluids, radiation or classical fields, Terre, ocean, espace, Earth, ocean, space, Astronomie, Astronomy, Systèmes stellaires. Objets et systèmes galactiques et extragalactiques. L'univers, Stellar systems. Galactic and extragalactic objects and systems. The universe, Cosmologie, Cosmology, Modèles de la théorie corpusculaire et de la théorie du champ de l'univers primordial (incluant les crêpes cosmiques, les cordes cosmiques, les phénomènes chaotiques, l'univers inflatoire, etc.), Particle-theory and field-theory models of the early universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.), Autosimilitude, Selfsimilarity, Autosimilitud, Champ sans masse, Massless field, Campo sin masa, Champ scalaire, Scalar fields, Cosmologie, Cosmology, Discontinuité, Discontinuity, Discontinuidad, Inflation, Instabilité coque, Kink instability, Métrique Friedmann, Friedmann metric, Métrico Friedmann, Métrique plate, Flat metric, Métrico plano, Potentiel champ, Field potential, Potencial campo, Solution similitude, Similarity solution, Solución semejanza, Stabilisation, Stabilization, Symétrie sphérique, Spherical symmetry, Simetría esférica
Document Type:
Academic journal
Article
File Description:
text
Language:
English
Author Affiliations:
Advanced Research Institute for Science and Engineering, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo 169-8555, Japan
Astronomy Unit, School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London El 4NS, United Kingdom
Astronomy Unit, School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London El 4NS, United Kingdom
ISSN:
0370-2693
Rights:
Copyright 2005 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Astronomy
Theoretical physics
Theoretical physics
Accession Number:
edscal.16455738
Database:
PASCAL Archive
Further Information
The evolution of weak discontinuity is investigated in the flat FRW universe with a single scalar field and with multiple scalar fields. We consider both massless scalar fields and scalar fields with exponential potentials. Then we find that a new type of instability, i.e., kink instability develops in the flat FRW universe with massless scalar fields. The kink instability develops with scalar fields with considerably steep exponential potentials, while less steep exponential potentials do not suffer from kink instability. In particular, assisted inflation with multiple scalar fields does not suffer from kink instability. The stability of general spherically symmetric self-similar solutions is also discussed.