CORRESPONDENCE IDENTITIES .3. CLASSICLA PATHS AND RUTHERFORD SCATTERING

In preparation for the derivation of correspondence identities for the Rutherford scattering problem, the relevant classical theory is developed. Convenient conventions for classical canonical transformations are introduced. Classical O(1, 3) symmetry properties are discussed. Classically accessible and inaccessible regions of momentum space are defined, and, for the latter, generalized classical paths and the corresponding action functions are obtained by analytic continuation.