Robustness of slow contraction to cosmic initial conditions

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Anna Ijjas
  • William G. Cook
  • Frans Pretorius
  • Paul J. Steinhardt
  • Elliot Y. Davies

Organisationseinheiten

Externe Organisationen

  • Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut)
  • Friedrich-Schiller-Universität Jena
  • Princeton University
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer030
FachzeitschriftJournal of Cosmology and Astroparticle Physics
Jahrgang2020
Ausgabenummer8
PublikationsstatusVeröffentlicht - 13 Aug. 2020

Abstract

We present numerical relativity simulations of cosmological scenarios in which the universe is smoothed and flattened by undergoing a phase of slow contraction and test their sensitivity to a wide range of initial conditions. Our numerical scheme enables the variation of all freely specifiable physical quantities that characterize the initial spatial hypersurface, such as the initial shear and spatial curvature contributions as well as the initial field and velocity distributions of the scalar that drives the cosmological evolution. In particular, we include initial conditions that are far outside the perturbative regime of the well-known attractor scaling solution. We complement our numerical results by analytically performing a complete dynamical systems analysis and show that the two approaches yield consistent results.

ASJC Scopus Sachgebiete

Zitieren

Robustness of slow contraction to cosmic initial conditions. / Ijjas, Anna; Cook, William G.; Pretorius, Frans et al.
in: Journal of Cosmology and Astroparticle Physics, Jahrgang 2020, Nr. 8, 030, 13.08.2020.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Ijjas A, Cook WG, Pretorius F, Steinhardt PJ, Davies EY. Robustness of slow contraction to cosmic initial conditions. Journal of Cosmology and Astroparticle Physics. 2020 Aug 13;2020(8):030. doi: 10.48550/arXiv.2006.04999, 10.1088/1475-7516/2020/08/030
Ijjas, Anna ; Cook, William G. ; Pretorius, Frans et al. / Robustness of slow contraction to cosmic initial conditions. in: Journal of Cosmology and Astroparticle Physics. 2020 ; Jahrgang 2020, Nr. 8.
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