Tensor Ordering Utilities (qiskit_nature.second_q.operators.tensor_ordering)#

Utility functions to detect and transform the index-ordering convention of two-body integrals

to_chemist_ordering(two_body_tensor, *[, ...])

Convert a two-body tensor to chemists' index order.

to_physicist_ordering(two_body_tensor, *[, ...])

Convert a two-body tensor to physicists' index order.

find_index_order(two_body_tensor, *[, rtol, ...])

Return the index-order convention of the provided rank-four tensor.

IndexType(value[, names, module, qualname, ...])

This Enum names the different permutation index orders that could be encountered.