openfermion.utils.map_two_pdm_to_two_hole_dm

Map from the 2-RDM to the 2-hole-RDM

Main aliases

openfermion.utils.map_two_pdm_to_two_hole_dm(
    tpdm, opdm
)

Args
`tpdm`	`numpy.ndarray` The 2-RDM as a 4-index tensor. Indices follow the internal convention of tpdm[p, q, r, s] == \(a_{p}^{\dagger}a_{q}^{\dagger}a_{r}a_{s}\).
`opdm`	`numpy.ndarray` The 1-RDM as a 2-index tensor. Indices follow the internal convention of opdm[p, q] == \(a_{p}^{\dagger}a_{q}\).

Args

tpdm

numpy.ndarray

The 2-RDM as a 4-index tensor. Indices follow the internal convention of tpdm[p, q, r, s] == \(a_{p}^{\dagger}a_{q}^{\dagger}a_{r}a_{s}\).

opdm

numpy.ndarray

The 1-RDM as a 2-index tensor. Indices follow the internal convention of opdm[p, q] == \(a_{p}^{\dagger}a_{q}\).

Returns
`tqdm`	`numpy.ndarray` The 2-hole matrix.

tqdm

numpy.ndarray

The 2-hole matrix.

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 2024-04-26 UTC.