API Reference¶

Auto-generated from docstrings via sphinx.ext.autosummary. Each module page lists its public classes and functions with full signatures; cross-refs ({func}, {class}) used throughout the Algorithms Manual link here.

`feynlag.parameters`	Model parameters: external (experiment-fixed) vs internal (derived).
`feynlag.fields`	Particle field classes.
`feynlag.groups.base`	Symmetry group base classes.
`feynlag.groups.gauge`	Gauge groups with explicit generator matrices.
`feynlag.groups.discrete`	Discrete symmetries: Z_N and S_3 (extensible to other finite groups).
`feynlag.lagrangian`	Lagrangian assembly and the top-level Model object.
`feynlag.operators`	Derivative operators and momentum-space substitution.
`feynlag.invariance`	Symmetry and consistency checks for Lagrangian terms.
`feynlag.models`	Reusable Standard Model building blocks.
`feynlag.suggest`	Invariant-term suggestion: enumerate the Lagrangian a model can have.
`feynlag.dirac`	Dirac / Clifford algebra layer.
`feynlag.vacuum.ewsb`	Electroweak symmetry breaking: the Vacuum object.
`feynlag.vacuum.tadpoles`	Tadpole conditions: extraction and solving.
`feynlag.vacuum.masses`	Mass-matrix extraction.
`feynlag.vacuum.diagonalize`	Rotations from the weak basis to the physical (mass) basis.
`feynlag.vertices.extract`	Interaction-coefficient extraction from a Lagrangian.
`feynlag.vertices.bilinear`	The fermion bilinear track.
`feynlag.vertices.vertex`	Vertex objects and the closed Lorentz-structure catalog.
`feynlag.vertices.yangmills`	Triple and quartic gauge self-couplings from group data.
`feynlag.export.latex`	LaTeX vertex-table generation.
`feynlag.export.ufo.writer`	UFO model directory writer.
`feynlag.export.ufo.vvvv`	Gauge self-coupling export helpers.
`feynlag.export.ufo.lorentz_map`	UFO Lorentz structures for the closed v1 vertex catalog.
`feynlag.pheno.lorentz`	Covariant Dirac-trace engine for squared amplitudes.
`feynlag.pheno.kinematics`	Two- and three-body phase space kinematics.
`feynlag.pheno.amplitudes`	Spin-averaged squared amplitudes for the three-leg vertex catalog.
`feynlag.pheno.vertices`	Unified decay-vertex view over feynlag's two extraction tracks.
`feynlag.pheno.particles`	Physical (post-EWSB) Dirac particles for the decay calculator.
`feynlag.pheno.propagator`	Internal propagators for off-shell (multi-body) decay amplitudes.
`feynlag.pheno.integrate`	Numerical Dalitz-plot integration for 1→3 decay widths.
`feynlag.pheno.offshell`	Off-shell (1→3) decay amplitudes: a scalar to one on-shell + one off-shell V.
`feynlag.pheno.loop`	Loop-induced Higgs decays: $hto gg,gammagamma,Zgamma$ (Tier 3).
`feynlag.pheno.calculator`	Partial widths, total widths and branching ratios from a feynlag model.
`feynlag.verify.checks`	Executable physics invariants — the house verification toolkit.