Cosmological perturbations from multi-field inflation

Details Cosmological perturbations from multi-field inflation Cosmological perturbations from multi-field inflation

2008-09-15

arxiv.org/abs/0809.2540v1

J.Phys.Conf.Ser.140:012004,2008

Astronomy and Astrophysics

Astrophysics

Invited plenary talk at ICGC-07 (International Conference on Gravitation and Cosmology), 17-21 December 2007, IUCAA, Pune, Ind

Scientific paper

10.1088/1742-6596/140/1/012004

We briefly review the standard derivation of the spectra of cosmological
perturbations in the simplest models of inflation. We then consider models with
several scalar fields, described by Lagrangians with an arbitrary dependence on
the kinetic terms. We illustrate our general formalism with the case of
multi-field DBI inflation.

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