openfermion.utils.map_two_hole_dm_to_two_pdm

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

Main aliases

openfermion.utils.map_two_hole_dm_to_two_pdm(
    tqdm, opdm
)

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

tqdm

numpy.ndarray

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

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
`tpdm`	`numpy.ndarray` The 2-RDM matrix.

tpdm

numpy.ndarray

The 2-RDM matrix.

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Last updated 2025-02-12 UTC.