Module treetn 

Tree Tensor Network implementation.

This module provides the TreeTN type, a tree-structured tensor network for efficient tensor operations with canonicalization and truncation support.

Re-exports

pub use partial_contraction::partial_contract;

pub use partial_contraction::PartialContractionSpec;

Modules

contraction

Contraction and operations for TreeTN.

partial_contraction

Partial site contraction for TreeTN.

Structs

BoundaryEdge

Boundary edge information: (node_in_region, neighbor_outside, bond_index).

LocalUpdateStep

A single step in a local update sweep.

LocalUpdateSweepPlan

A complete sweep plan for local updates.

ScheduledSwapStep

A single two-site update step in a pre-computed swap schedule.

SwapOptions

Options for site index swap (truncation during SVD).

SwapSchedule

Pre-computed swap schedule for swap_site_indices.

TreeTN

Tree Tensor Network structure (inspired by ITensorNetworks.jl’s TreeTensorNetwork).

TreeTopology

Specification for tree topology: defines nodes and index ID assignments.

TruncateUpdater

Truncation updater for nsite=2 sweeps.

Traits

LocalUpdater

Trait for local update operations during a sweep.

Functions

apply_local_update_sweep

Apply a local update sweep to a TreeTN.

factorize_tensor_to_treetn

Decompose a dense tensor into a TreeTN using QR-based factorization.

factorize_tensor_to_treetn_with

Factorize a dense tensor into a TreeTN using specified factorization options.

get_boundary_edges

Get all boundary edges for a given region in a TreeTN.