Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2004-07-07
Class.Quant.Grav. 22 (2005) 1269-1288
Physics
High Energy Physics
High Energy Physics - Theory
25 pages, 8 figures. v2: references added. v3: discussion clarified, references added, figure deleted and typos corrected
Scientific paper
10.1088/0264-9381/22/7/005
We investigate cosmologies with an arbitrary number of scalars and the most general multi-exponential potential. By formulating the equations of motion in terms of autonomous systems we complete the classification of power-law and de Sitter solutions as critical points, e.g. attractor and repeller solutions, in terms of the scalar couplings. Many of these solutions have been overlooked in the literature. We provide specific examples for double and triple exponential potentials with one and two scalars, where we find numerical solutions, which interpolate between the critical points. Some of these correspond to the reduction of new exotic S-brane solutions.
Collinucci Andres
Nielsen Mikkel
Riet Thomas Van
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