dorsal/arxiv
View SchemaOn the geometry of Hamiltonian chaos
| Authors | Lawrence Horwitz, Jacob Levitan, Meir Lewkowicz, Marcelo Schiffer, Yossi Ben Zion |
|---|---|
| Categories | |
| ArXiv ID | physics/0701212 |
| URL | https://arxiv.org/abs/physics/0701212 |
| DOI | 10.1103/PhysRevLett.98.234301 |
| Journal | Phys.Rev.Lett.98:234301,2007 |
Abstract
We show that Gutzwiller's characterization of chaotic Hamiltonian systems in terms of the curvature associated with a Riemannian metric tensor in the structure of the Hamiltonian can be extended to a wide class of potential models of standard form through definition of a conformal metric. The geodesic equations reproduce the Hamilton equations of the original potential model when a transition is made to the dual manifold, and the geodesics in the dual space coincide with the orbits of the Hamiltonian potential model. We therefore find a direct geometrical description of the time development of a Hamiltonian potential model. The second covariant derivative of the geodesic deviation in this dual manifold generates a dynamical curvature, resulting in (energy dependent) criteria for unstable behavior different from the usual Lyapunov criteria. We discuss some examples of unstable Hamiltonian systems in two dimensions giving, in particular, detailed results for a potential obtained from a fifth order expansion of a Toda lattice Hamiltonian.
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"abstract": "We show that Gutzwiller\u0027s characterization of chaotic Hamiltonian systems in\nterms of the curvature associated with a Riemannian metric tensor in the\nstructure of the Hamiltonian can be extended to a wide class of potential\nmodels of standard form through definition of a conformal metric. The geodesic\nequations reproduce the Hamilton equations of the original potential model when\na transition is made to the dual manifold, and the geodesics in the dual space\ncoincide with the orbits of the Hamiltonian potential model. We therefore find\na direct geometrical description of the time development of a Hamiltonian\npotential model. The second covariant derivative of the geodesic deviation in\nthis dual manifold generates a dynamical curvature, resulting in (energy\ndependent) criteria for unstable behavior different from the usual Lyapunov\ncriteria. We discuss some examples of unstable Hamiltonian systems in two\ndimensions giving, in particular, detailed results for a potential obtained\nfrom a fifth order expansion of a Toda lattice Hamiltonian.",
"arxiv_id": "physics/0701212",
"authors": [
"Lawrence Horwitz",
"Jacob Levitan",
"Meir Lewkowicz",
"Marcelo Schiffer",
"Yossi Ben Zion"
],
"categories": [
"physics.class-ph",
"gr-qc",
"nlin.CD",
"physics.gen-ph"
],
"doi": "10.1103/PhysRevLett.98.234301",
"journal_ref": "Phys.Rev.Lett.98:234301,2007",
"title": "On the geometry of Hamiltonian chaos",
"url": "https://arxiv.org/abs/physics/0701212"
},
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