openfermion.utils.map_particle_hole_dm_to_two_pdm
Map the 2-RDM to the particle-hole-RDM
openfermion.utils.map_particle_hole_dm_to_two_pdm(
phdm, opdm
)
Args |
phdm (numpy.ndarray): The 2-particle-hole-RDM as a 4-index tensor.
Indices follow the internal convention of phdm[p, q, r, s] ==
\(a_{p}^{\dagger}a_{q}a_{r}^{\dagger}a_{s}\).
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 |
tpdm (numpy.ndarray): The 2-RDM matrix.
|
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Last updated 2022-10-26 UTC.
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