Ignorable coordinates in the ideal resonance problem |
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| Authors: | Boris Garfinkel |
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| Institution: | 1. Department of Astronomy, Yale University, New Haven, Conn., USA
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| Abstract: | If a dynamical system ofN degrees of freedom is reduced to the Ideal Resonance Problem, the Hamiltonian takes the form $$F = B(y) + 2\mu ^2 A(y)\sin ^2 x_1 , \mu<< 1.$$ Herey is the momentum-vectory k withk=1, 2,...,N, andx 1 is thecritical argument. A first-orderglobal solution,x 1(t) andy 1(t), for theactive variables of the problem, has been given in Garfinkelet al. (1971). Sincex k fork>1 are ignorable coordinates, it follows that $$y_\kappa = const., k > 1.$$ The solution is completed here by the construction of the functionsx k(t) fork>1, derivable from the new HamiltonianF′(y′) and the generatorS(x, y′) of the von Zeipel canonical transformation used in the cited paper. The solution is subject to thenormality condition, derived in a previous paper fork=1, and extended here to 2≤k≤N. It is shown that the condition is satisfied in the problem of the critical inclination provided it is satisfied fork=1. |
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