Time-dependent routes¶

Wavepacket propagation as the second, independent route to the same cross sections.

N₂ vibrationally-elastic/inelastic cross section: time-dependent (Crank-Nicolson) method — wavepacket propagation in one dimension.
N₂ vibrationally-elastic/inelastic cross section: time-dependent (Crank-Nicolson) route to the exact 2-D solution — the exact two-dimensional time-dependent route, including why order-1 Crank–Nicolson was not enough.
Alternative TD energy extractors: Dirac (delta) and Flux (flow) — three energy extractors sharing one propagation.
Time-dependent dissociative attachment (TD-DA): the nuclear-axis extractors — the dissociative-attachment generalization.
The time-dependent nonlocal resonance model — the same, inside the nonlocal resonance model: the memory integral resummed into propagation under a block Hamiltonian.
Watching the nonlocal kernel run — a walkthrough — a walkthrough of what that resummation makes observable: where the amplitude sits, which way it is flowing, and what three molecules say about it.