Resurvey of order and chaos in spinning compact binaries

Details Resurvey of order and chaos in spinning compact binaries Resurvey of order and chaos in spinning compact binaries

2010-04-29

arxiv.org/abs/1004.5317v1

Phys. Rev. D 77, 103012 (2008)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 7 figures

Scientific paper

10.1103/PhysRevD.77.103012

This paper is mainly devoted to applying the invariant, fast, Lyapunov indicator to clarify some doubt regarding the apparently conflicting results of chaos in spinning compact binaries at the second-order post-Newtonian approximation of general relativity from previous literatures. It is shown with a number of examples that no single physical parameter or initial condition can be described as responsible for causing chaos, but a complicated combination of all parameters and initial conditions is responsible. In other words, a universal rule for the dependence of chaos on each parameter or initial condition cannot be found in general. Chaos does not depend only on the mass ratio, and the maximal spins do not necessarily bring the strongest effect of chaos. Additionally, chaos does not always become drastic when the initial spin vectors are nearly perpendicular to the orbital plane, and the alignment of spins cannot trigger chaos by itself.

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