Early Universe: inflation and cosmological perturbations

Details Early Universe: inflation and cosmological perturbations Early Universe: inflation and cosmological perturbations

2008-11-26

arxiv.org/abs/0811.4329v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Talk given at the workshop "Geometry, Topology, QFT and Cosmology", Paris (28-30 May 2008); 23 pages

Scientific paper

After a brief summary of general relativity and cosmology, we present the basic concepts underlying inflation, the currently best motivated models for the early Universe. We describe the simplest inflation models, based on a single scalar field, and discuss how primordial cosmological perturbations are generated. We then review some recent developments concerning multi-field inflation models, in particular multi-field Dirac-Born-Infeld inflation.

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