Struct OpProduct 

pub struct OpProduct { /* private fields */ }

Typed ordered product of local actions.

splits identify factor boundaries. A single split retains the traditional spinful-fermion meaning; multiple (including repeated) boundaries describe arbitrary tensor products with empty factor actions.

Implementations

impl OpProduct

pub fn parse(label: impl AsRef<str>) -> Result<Self>

Parse QMBED’s compact operator-label grammar.

| records a tensor-factor boundary and every other character maps to one built-in or custom local action.

pub fn new(local: impl IntoIterator<Item = LocalOperator>) -> Result<Self>

Construct a single-factor ordered product.

The product must contain at least one local action. Sites are attached later by Coupling, allowing this parsed action to be reused.

pub fn spinful( up: impl IntoIterator<Item = LocalOperator>, down: impl IntoIterator<Item = LocalOperator>, ) -> Result<Self>

Construct a two-species product and record the species boundary.

pub fn with_split( local: impl IntoIterator<Item = LocalOperator>, split: Option<usize>, ) -> Result<Self>

Construct a product with zero or one explicit factor boundary.

pub fn with_splits( local: impl IntoIterator<Item = LocalOperator>, splits: impl IntoIterator<Item = usize>, ) -> Result<Self>

Construct an operator product with any number of ordered factor boundaries. Duplicate boundaries preserve empty tensor factors such as the middle factor in x||z.

pub fn local_operators(&self) -> &[LocalOperator]

Return the local actions in coupling-site order.

pub const fn split(&self) -> Option<usize>

Return the single species boundary, when exactly one exists.

pub fn splits(&self) -> &[usize]

Return every ordered tensor-factor boundary.

pub fn label(&self) -> &str

Return the canonical compact operator label.

Trait Implementations

impl Clone for OpProduct

fn clone(&self) -> OpProduct

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for OpProduct

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for OpProduct

fn eq(&self, other: &OpProduct) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for OpProduct

impl StructuralPartialEq for OpProduct