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- Title
Supernova constraints on higher-dimensional cosmology with a phantom field.
- Authors
Overduin, James; Prins, Nathan; Lee, Joohan
- Abstract
We use observational data on the magnitude-redshift relation for Type Ia supernovae (SNeIa) together with constraints on the ages of the oldest stars to rule out a higher-dimensional extension of General Relativity with a negative kinetic energy scalar field. This theory is of considerable physical interest because it produces accelerated expansion at both early and late times with a single new field, as in quintessential inflation scenarios. It is also of mathematical interest because it is characterized by an analytic expression for the macroscopic scale factor . We show that cosmological solutions of this theory can be usefully parametrized by a single quantity, the lookback time corresponding to the transition from deceleration to acceleration. Supernovae data from the recently released Supernova Cosmology Project (SCP) Union 2.1 compilation single out a narrow range of values for . In the context of the theory, however, these same values of imply that the universe is much older than the oldest observed stars.
- Subjects
SUPERNOVAE; CONSTRAINTS (Physics); FIELD theory (Physics); ASTRONOMICAL observations; REDSHIFT; SCALAR field theory
- Publication
International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2016, Vol 25, Issue 6, p1
- ISSN
0218-2718
- Publication type
Article
- DOI
10.1142/S0218271816500693