Abstract
The magnetic geodesic flow on a flat two-torus with the magnetic field F = cos(x)dx ∧ dy is completely integrated and the description of all contractible periodic magnetic geodesics is given. It is shown that there are no such geodesics for energy E ≥ 1/2, for E < 1/2 simple periodic magnetic geodesics form two S 1-families for which the (fixed energy) action functional is positive and therefore there are no periodic magnetic geodesics for which the action functional is negative.
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Taimanov, I.A. On an integrable magnetic geodesic flow on the two-torus. Regul. Chaot. Dyn. 20, 667–678 (2015). https://doi.org/10.1134/S1560354715060039
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DOI: https://doi.org/10.1134/S1560354715060039