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openfermion.utils.map_particle_hole_dm_to_one_pdm
Map the particle-hole-RDM to the 1-RDM
openfermion.utils.map_particle_hole_dm_to_one_pdm(
phdm, num_particles, num_basis_functions
)
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] ==
\(a_{p}^{\dagger}a_{q}a_{r}^{\dagger}a_{s}\).
|
num_particles
|
number of particles in the system.
|
num_basis_functions
|
number of spin-orbitals
(usually the number of qubits)
|
Returns |
opdm (numpy.ndarray): the 1-RDM transformed from a 1-RDM.
|
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Last updated 2021-12-07 UTC.
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