Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Doubly-boosted vector cosmologies from disformal metrics
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-9403-8565
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA. Université Libre de Bruxelles, Belgium.
2015 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. 90, no 9, 095301Article in journal (Refereed) Published
Abstract [en]

A systematic dynamical system approach is applied to study the cosmology of anisotropic Bianchi I universes in which a vector field is assumed to operate on a disformal frame. This study yields a number of new fixed points, among which are anisotropic scaling solutions. Within the simplifying assumption of (nearly) constant-slope potentials these are either not stable attractors, do not describe accelerating expansion or else they feature too large anisotropies to be compatible with observations. Nonetheless, some solutions do have an appeal for cosmological applications in that isotropy is retained due to rapid oscillations of the vector field. Such cosmological scenarios could describe physics beyond standard model such as extra dimensional models that predict disformal couplings between vector and scalar fields.

Place, publisher, year, edition, pages
2015. Vol. 90, no 9, 095301
Keyword [en]
vector fields, disformal transformations, cosmology
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-176369DOI: 10.1088/0031-8949/90/9/095301ISI: 000362492500028Scopus ID: 2-s2.0-84940688753OAI: oai:DiVA.org:kth-176369DiVA: diva2:867863
Note

QC 20151106

Available from: 2015-11-06 Created: 2015-11-03 Last updated: 2017-12-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Koivisto, Tomi S.

Search in DiVA

By author/editor
Koivisto, Tomi S.Urban, Federico R.
By organisation
Nordic Institute for Theoretical Physics NORDITA
In the same journal
Physica Scripta
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 15 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf