Do supernovae favor tachyonic big brake instead of de sitter?

L. Gergely, Z. Keresztes, A. Yu Kamenshchik, V. Gorini, U. Moschella

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We investigate whether a tachyonic scalar field, encompassing both dark energy and dark matter-like features will drive our universe towards a Big Brake singularity or a de Sitter expansion. In doing this it is crucial to establish the parameter domain of the model, which is compatible with type Ia supernovae data. We find the 1σ contours and evolve the tachyonic sytem into the future. We conclude, that both future evolutions are allowed by observations, Big Brake becoming increasingly likely with the increase of the positive model parameter k.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages884-891
Number of pages8
Volume1241
DOIs
Publication statusPublished - 2010
EventInvisible Universe International Conference - Paris, France
Duration: Jun 29 2009Jul 3 2009

Other

OtherInvisible Universe International Conference
CountryFrance
CityParis
Period6/29/097/3/09

Fingerprint

brakes
supernovae
dark energy
dark matter
universe
scalars
expansion

Keywords

  • cosmological singularities
  • dark energy
  • supernovae
  • tachyons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Gergely, L., Keresztes, Z., Kamenshchik, A. Y., Gorini, V., & Moschella, U. (2010). Do supernovae favor tachyonic big brake instead of de sitter? In AIP Conference Proceedings (Vol. 1241, pp. 884-891) https://doi.org/10.1063/1.3462729

Do supernovae favor tachyonic big brake instead of de sitter? / Gergely, L.; Keresztes, Z.; Kamenshchik, A. Yu; Gorini, V.; Moschella, U.

AIP Conference Proceedings. Vol. 1241 2010. p. 884-891.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gergely, L, Keresztes, Z, Kamenshchik, AY, Gorini, V & Moschella, U 2010, Do supernovae favor tachyonic big brake instead of de sitter? in AIP Conference Proceedings. vol. 1241, pp. 884-891, Invisible Universe International Conference, Paris, France, 6/29/09. https://doi.org/10.1063/1.3462729
Gergely L, Keresztes Z, Kamenshchik AY, Gorini V, Moschella U. Do supernovae favor tachyonic big brake instead of de sitter? In AIP Conference Proceedings. Vol. 1241. 2010. p. 884-891 https://doi.org/10.1063/1.3462729
Gergely, L. ; Keresztes, Z. ; Kamenshchik, A. Yu ; Gorini, V. ; Moschella, U. / Do supernovae favor tachyonic big brake instead of de sitter?. AIP Conference Proceedings. Vol. 1241 2010. pp. 884-891
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