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• W2347649218 abstract "The only one example has been known of magnetic geodesic flow on the 2-torus which has a polynomial in momenta integral independent of the Hamiltonian. In this example the integral is linear in momenta and corresponds to a one parametric group preserving the Lagrangian function of the magnetic flow. In this paper the problem of integrability on one energy level is considered. This problem can be reduced to a remarkable Semi-hamiltonian system of quasi-linear PDEs and to the question of existence of smooth periodic solutions for this system. Our main result states that the pair of Liouville metric with zero magnetic field on the 2-torus can be analytically deformed to a Riemannian metric with small magnetic field so that the magnetic geodesic flow on an energy level is integrable by means of a quadratic in momenta integral. Thus our construction gives a new example of smooth periodic solution to the Semi-hamiltonian (Rich) quasi-linear system of PDEs." @default.
• W2347649218 created "2016-06-24" @default.
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• W2347649218 date "2017-01-06" @default.
• W2347649218 modified "2023-09-27" @default.
• W2347649218 title "Integrable Magnetic Geodesic Flows on 2-Torus: New Examples via Quasi-Linear System of PDEs" @default.
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• W2347649218 doi "https://doi.org/10.1007/s00220-016-2822-5" @default.
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