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Chaos around a black hole

L Bombelli and E Calzetta

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The authors apply the Melnikov method for identifying chaos in near integrable systems to relativistic particle motion around a Schwarzschild black hole. They start by giving a self-contained introduction to the Melnikov method together with some relevant background on dynamical systems. Then they show that a relativistic particle was unstable circular orbits around a Schwarzschild black hole, and that each one of these gives rise to a homoclinic orbit in phase space, which tends to the unstable one for t to +or- infinity . Finally, the authors use the Melnikov method to conclude that, under most periodic perturbations of the black-hole metric, the homoclinic orbit becomes chaotic.


PACS

04.70.-s Physics of black holes

05.45.-a Nonlinear dynamics and nonlinear dynamical systems

02.30.Ik Integrable systems

MSC

37D45 Strange attractors, chaotic dynamics

37J45 Periodic, homoclinic and heteroclinic orbits; variational methods, degree-theoretic methods

83C57 Black holes

Subjects

Mathematical physics

Gravitation and cosmology

Statistical physics and nonlinear systems

Dates

Issue 12 (December 1992)



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