Inflation and String Cosmology

Details Inflation and String Cosmology Inflation and String Cosmology

2001-07-20

arxiv.org/abs/hep-th/0107176v1

Int.J.Mod.Phys.A17S1:89-104,2002

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, contribution to the Proceedings of PASCOS 2001

Scientific paper

Inflationary theory is already 20 years old, and it is impossible to describe all of its versions and implications in a short talk. I will concentrate on several subjects which I believe to be most important. First of all, I will give a brief review of the first versions of inflationary theory, from Starobinsky model to new inflation. Then I will describe chaotic inflation, the theory of quantum fluctuations and density perturbations, the theory of eternal inflation, and recent observational data. In the second part of the talk I will discuss the recently proposed ekpyrotic scenario and argue that in its present form it does not provide a viable alternative to inflation.

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