Registry · Definition
IV.D51
tau-effective
formalized
IV.D51 — Character Modes
Character modes on fiber T² are χ_{m,n}(θ_γ, θ_η) = exp(i(mθ_γ + nθ_η)) for (m,n) ∈ Z². Mode label m counts γ-circle windings (EM lobe), n counts η-circle windings (Strong lobe).
Book IV
Part 3
Ch. 16