Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-12-07
Phys.Rev. D65 (2002) 081501
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages, 5 figures, uses REVTeX
Scientific paper
10.1103/PhysRevD.65.081501
We analyze a bifurcation phenomenon associated with critical gravitational collapse in a family of self-gravitating SU(2) $\sigma$-models. As the dimensionless coupling constant decreases, the critical solution changes from discretely self-similar (DSS) to continuously self-similar (CSS). Numerical results provide evidence for a bifurcation which is analogous to a heteroclinic loop bifurcation in dynamical systems, where two fixed points (CSS) collide with a limit cycle (DSS) in phase space as the coupling constant tends to a critical value.
Aichelburg Peter C.
Husa Sascha
Lechner Christiane
Thornburg Jonathan
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