Sigma Model on de Sitter Space

Details Sigma Model on de Sitter Space Sigma Model on de Sitter Space

1997-10-29

arxiv.org/abs/gr-qc/9710126v1

Phys.Rev. D57 (1998) 6176-6180

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages, latex2e, 1 figure

Scientific paper

10.1103/PhysRevD.57.6176

We discuss spherically symmetric, static solutions to the SU(2) sigma model on a de Sitter background. Despite of its simplicity this model reflects many of the features exhibited by systems of non-linear matter coupled to gravity e.g. there exists a countable set of regular solutions with finite energy; all of the solutions show linear instability with the number of unstable modes increasing with energy.

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