SIGMA-MODEL ON DESITTER SPACE

Authors
AICHELBURG PC LECHNER C
Citation
Pc. Aichelburg et C. Lechner, SIGMA-MODEL ON DESITTER SPACE, Physical review. D. Particles and fields, 57(10), 1998, pp. 6176-6180
Citations number
8
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
57
Issue
10
Year of publication
1998
Pages
6176 - 6180
Database
ISI
SICI code
0556-2821(1998)57:10<6176:>2.0.ZU;2-M
Abstract
We discuss spherically symmetric, static solutions to the SU(2) sigma model on de Sitter background. Despite its simplicity this model refle cts many of the features exhibited by systems of nonlinear matter coup led to gravity; e.g., there exists a countable set of regular solution s with finite energy: All of the solutions show linear instability wit h the number of unstable modes increasing with energy.