Gravitational energy as dark energy: Average observational quantities

Type of content
Conference Contributions - Published
Thesis discipline
Degree name
Publisher
University of Canterbury. Physics and Astronomy
Journal Title
Journal ISSN
Volume Title
Language
Date
2010
Authors
Wiltshire, D.L.
Abstract

In the timescape scenario cosmic acceleration is understand as an apparent effect, due to gravitational energy gradients that grow when spatial curvature gradients become significant with the nonlinear growth of cosmic structure. This affects the calibratation of local geometry to the solutions of the volume–average evolution equations corrected by backreaction. In this paper I discuss recent work on defining observational tests for average geometric quantities which can distinguish the timescape model from a cosmological constant or other models of dark energy.

Description
Citation
Wiltshire, D.L. (2010) Gravitational energy as dark energy: Average observational quantities. Paris, France: Invisible Universe, 29 Jun-3 Jul 2009. AIP Conference Proceedings, 1241, 1182-1191.
Keywords
dark energy, cosmological constant, theoretical cosmology, observational cosmology
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Fields of Research::51 - Physical sciences::5101 - Astronomical sciences::510103 - Cosmology and extragalactic astronomy
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