Semiclassical propagators#
The Van Vleck-Morette single-trajectory propagator, the Maslov index’s topological caustic-counting correction, and the Herman-Kluk multi-trajectory frozen-Gaussian propagator, each checked against exact quantum evolution of the harmonic oscillator.
Herman-Kluk frozen-Gaussian wavepacket propagation
Herman-Kluk frozen-Gaussian wavepacket propagation
The Maslov index: caustics and Keller’s quantization condition
The Maslov index: caustics and Keller's quantization condition
