Primordial perturbations from inflation

Details Primordial perturbations from inflation Primordial perturbations from inflation

2002-01-31

arxiv.org/abs/astro-ph/0201541v1

Astronomy and Astrophysics

Astrophysics

10 pages, no figures, invited talk at 5th RESCEU Symposium, New Trends in Theoretical and Observational Cosmology, Tokyo, Nove

Scientific paper

I review the standard analysis of adiabatic scalar and tensor perturbations produced by slow-roll inflation driven by a single scalar field, before going on to discuss recent work on the role of non-adiabatic modes during and after inflation. Isocurvature perturbations correlated with adiabatic modes may be produced during multi-field inflation and would give valuable information about the physics of the early universe. A significant contribution from correlated isocurvature perturbations is not ruled out by present data, but should be either detected or ruled out by future observations.

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