Trans-Planckian Physics and Non-Commutative Inflation

Details Trans-Planckian Physics and Non-Commutative Inflation Trans-Planckian Physics and Non-Commutative Inflation

2008-02-04

arxiv.org/abs/0802.0355v1

Mod.Phys.Lett.A23:1598-1605,2008

Physics

High Energy Physics

High Energy Physics - Theory

11pages, 1 figure, To appear in the Proceedings of the CospA 2007, Taiwan

Scientific paper

10.1142/S0217732308027990

Non-commutativity of spacetime at the Planck scale may deform the usual dispersion relations. And these deformed dispersion relations could lead to the accelerating phase without a scalar field. In this paper, we have calculated the spectral index and the running of spectral index in a non-commutative inflation model. Non-commutative inflation with thermal radiation gives a scale invariant spectrum in the limit $w \to -1$ and negative running spectral index which are consistent with the WMAP 3-year results.

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