openfermion.utils.map_two_hole_dm_to_one_hole_dm

Map from 2-hole-RDM to 1-hole-RDM

Main aliases

openfermion.utils.map_two_hole_dm_to_one_hole_dm(
    tqdm, hole_number
)

Args
tqdm (numpy.ndarray): The 2-hole-RDM as a 4-index tensor. Indices follow the internal convention of tqdm[p, q, r, s] == \(a_{p}a_{q}a_{r}^{\dagger}a_{s}^{\dagger}\). hole_number (float): Number of holes in the system. For chemical systems this is usually the number of spin orbitals minus the number of electrons.

Returns
oqdm (numpy.ndarray): The 1-hole-RDM contracted from the tqdm.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2022-10-26 UTC.

Args