Dynamics of Generalized Assisted Inflation

Details Dynamics of Generalized Assisted Inflation Dynamics of Generalized Assisted Inflation

2006-02-20

arxiv.org/abs/gr-qc/0602077v1

Class.Quant.Grav. 23 (2006) 4593-4614

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

27 pages

Scientific paper

10.1088/0264-9381/23/14/003

We study the dynamics of multiple scalar fields and a barotropic fluid in an FLRW-universe. The scalar potential is a sum of exponentials. All critical points are constructed and these include scaling and de Sitter solutions. A stability analysis of the critical points is performed for generalized assisted inflation, which is an extension of assisted inflation where the fields mutually interact. Effects in generalized assisted inflation which differ from assisted inflation are emphasized. One such a difference is that an (inflationary) attractor can exist if some of the exponential terms in the potential are negative.

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