Entanglement

This section collects the lower-level helper modules used for subsystem / environment partitions, cached psi_matrix construction, exact Schmidt spectra, and density-matrix post-processing.

Contents:

• Partitions
  • exclude_columns()
  • subenv_map_to_unique_indices()
  • unique_configs_with_inverse()
  • can_encode_partition_configs()
  • build_partition_metadata()
• Psi Matrix
  • build_psi_matrix()
  • build_sparse_psi_matrix()
  • should_cache_psi_matrix_as_sparse()
• Schmidt
  • dense_schmidt_probabilities()
• Density Matrix
  • diagonalize_density_matrix()
  • get_projector_for_efficient_density_matrix()