pauli_sum_collector.estimate_energy() should return float when energy.imag == 0 #4313
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MichaelBroughton
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….imag == 0 (quantumlib#4313) For chemistry hamiltonians generated via `openfermion.qubit_operator_to_pauli_sum(qubit_hamiltonian)`, even though the pauli sum has only real terms (complex with imag == 0), using `p.estimated_energy()` returns a complex (with imag == 0) and hence cannot be directly used with scipy optimizers which expect a flaot (eg: `Nelder-Mead`, `SLSQP` etc.) See quantumlib/OpenFermion#732 for an example.
rht
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….imag == 0 (quantumlib#4313) For chemistry hamiltonians generated via `openfermion.qubit_operator_to_pauli_sum(qubit_hamiltonian)`, even though the pauli sum has only real terms (complex with imag == 0), using `p.estimated_energy()` returns a complex (with imag == 0) and hence cannot be directly used with scipy optimizers which expect a flaot (eg: `Nelder-Mead`, `SLSQP` etc.) See quantumlib/OpenFermion#732 for an example.
harry-phasecraft
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Oct 31, 2024
….imag == 0 (quantumlib#4313) For chemistry hamiltonians generated via `openfermion.qubit_operator_to_pauli_sum(qubit_hamiltonian)`, even though the pauli sum has only real terms (complex with imag == 0), using `p.estimated_energy()` returns a complex (with imag == 0) and hence cannot be directly used with scipy optimizers which expect a flaot (eg: `Nelder-Mead`, `SLSQP` etc.) See quantumlib/OpenFermion#732 for an example.
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For chemistry hamiltonians generated via
openfermion.qubit_operator_to_pauli_sum(qubit_hamiltonian), even though the pauli sum has only real terms (complex with imag == 0), usingp.estimated_energy()returns a complex (with imag == 0) and hence cannot be directly used with scipy optimizers which expect a flaot (eg:Nelder-Mead,SLSQPetc.)See quantumlib/OpenFermion#732 for an example.