What's Changed * add single-factorized hamiltonian by kevinsung in https://github.com/qiskit-community/ffsim/pull/76 * performance improvements from using standard library math functions instead of numpy functions
What's Changed * use fast contract_2e from pyscf by kevinsung in https://github.com/qiskit-community/ffsim/pull/70 * implement linear operator protocol for df hamiltonian by kevinsung in https://github.com/qiskit-community/ffsim/pull/73
What's Changed * add indices_to_strings function by kevinsung in https://github.com/qiskit-community/ffsim/pull/55 * add hartree_fock_state function by kevinsung in https://github.com/qiskit-community/ffsim/pull/60 * make dataclasses frozen by kevinsung in https://github.com/qiskit-community/ffsim/pull/61 * Fix FermionOperator LinearOperator nelec over/underflow by kevinsung in https://github.com/qiskit-community/ffsim/pull/63 * add function to compute rdm by kevinsung in https://github.com/qiskit-community/ffsim/pull/64 * add orbital_rotation argument to slater determinant one rdm by kevinsung in https://github.com/qiskit-community/ffsim/pull/66