Phantom Inflation with A Steplike Potential

Details Phantom Inflation with A Steplike Potential Phantom Inflation with A Steplike Potential

2010-12-03

arxiv.org/abs/1012.0673v2

Phys.Lett.B697:407-411,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, 6 figures, minimal changed, to be published in PLB

Scientific paper

10.1016/j.physletb.2010.12.055

The phantom inflation predicts a slightly blue spectrum of tensor perturbation, which might be tested in coming observations. In normal inflation models, the introduction of step in its potential generally results in an oscillation in the primordial power spectrum of curvature perturbation. We will check whether there is a similar case in the phantom inflation with steplike potential. We find that for same potentials, the oscillation of the spectrum of phantom inflation is nearly same with that of normal inflation, the difference between them is the tilt of power spectrum.

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