Calculation record

Exact fixed and moving cavity-band matrix elements.

These are spatial operator controls. A fixed-band form factor is not
automatically a physical particle cross section or a charge assignment.

Research context

  • Spatial and moving-cavity response

    Exact oscillator matrix elements connect cumulative state counts to polarized spatial response and energy-transfer distributions, while moving scalar and Dirac modes show why a frozen cavity overlap is only one part of coupling.

  • Diagnostic catalog

    Reproduction commands and scope descriptions for every local finite diagnostic and helper.

Interpret numerical checks within the assumptions and limitations documented in these notes.