Ray Helicity: Geometric Invariant for Multidimensional Resonant Wave Conversion
Ray Helicity: Geometric Invariant for Multidimensional Resonant Wave Conversion
For a multicomponent wave field propagating into a multidimensional conversion region, the rays are shown to be helical, in general. For a ray-based quantity to have a fundamental physical meaning, it must be invariant under the following two groups of transformations, which are used to construct solutions: congruence transformations (which …