Strong-field-approximation saddle-point: ∂_t S(p,t) = 0; Hamilton–Jacobi action

Layer 1 — Physicsin the attosecond-physics subtree

Strong-field-approximation (SFA) saddle-point framework — the canonical semiclassical primitive for high-harmonic-generation amplitude calculation (Lewenstein et al., PRA 49, 2117, 1994; Corkum, PRL 71, 1994, 1993). Setup: an ionised…

Related concepts

Hamilton–Jacobi equation
HHG cutoff E_max = I_p + 317·U_p/100 via SFA saddle-point Hamilton–Jacobi action

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