openfermion.utils.map_two_pdm_to_two_hole_dm
Map from the 2-RDM to the 2-hole-RDM
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] ==
\(a_{p}^{\dagger}a_{q}\).
|
Returns |
tqdm (numpy.ndarray): The 2-hole matrix.
|
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Last updated 2022-10-26 UTC.
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