Elastic Inflation

Details Elastic Inflation Elastic Inflation

2004-04-28

arxiv.org/abs/astro-ph/0404548v1

Phys.Rev. D70 (2004) 063518

Astronomy and Astrophysics

Astrophysics

12 pages

Scientific paper

10.1103/PhysRevD.70.063518

Inflation of a universe filled by an elastic continuous medium is considered. Elastic inflation, while capable of describing current observations, is qualitatively different from standard inflationary models. The scalar and tensor modes keep evolving after crossing the horizon. Due to this superhorizon evolution, the amplitude of the tensor mode (inflationary gravitational wave) is not simply proportional to the energy density of the universe at the time of horizon crossing. The spectral index of tensor modes can be positive.

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