Module metric 

Circular dichroism, duality breaking and electromagnetic chirality of helicity T-matrices.

Upstream: treams.TMatrix.cd, treams.TMatrix.db and treams.TMatrix.chi.

Modules

saved 🔒

Fixed-shape metric gradient state, including deferred nonsmoothness errors. treams-rs extension.

Structs

HelicityBlock 🔒

One helicity block of the chirality metric and its place in the singular-value differences.

MetricGradient

Gradients of the inputs of metric, in the order of its arguments.

MetricResidual

What metric saves for its pullback: the gradient itself, since the value is a real scalar; no singular vectors are kept.

Enums

Metric

Normalized measures of a global helicity T-matrix.

Constants

CHIRALITY_BLOCKS 🔒

The four helicity blocks, ordered so that block 3 - p minus block p is difference p, as treams pairs them in TMatrix.chi.

Functions

chirality 🔒

Electromagnetic chirality from the singular values of the four helicity blocks, for a matrix at unit scale. Its gradient is undefined at zero contrast.

chirality_gradient 🔒

The chirality gradient through the singular values of the helicity blocks.

circular_dichroism 🔒

Absorption circular dichroism with its matrix and wavenumber gradients.

duality_breaking 🔒

The fraction of scattering that flips helicity and its gradient, for a matrix at unit scale.

metric

One Metric of a global helicity T-matrix.