Dirac-field model of inflation in Einstein-Cartan theory

Details Dirac-field model of inflation in Einstein-Cartan theory Dirac-field model of inflation in Einstein-Cartan theory

2009-02-09

arxiv.org/abs/0902.1392v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

9 pages, 1 figure

Scientific paper

We present a cosmological model in which a single Dirac field with a flat potential can give rise to inflation within the framework of the Einstein-Cartan theory. It is shown that our Dirac-field model leads to a nearly scale-invariant spectrum of density fluctuations owing to the spin-interaction which naturally arises from the field equations of the Einstein-Cartan theory.

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