An exact factorization expresses spin-adapted unitaries as products of Pauli exponentials by reformulating the problem as low-dimensional optimization in the adjoint representation of small Lie algebras.
Local, expressive, quantum-number-preserving vqe ansätze for fermionic systems.New Journal of Physics, 23(11):113010, nov 2021
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Exact Factorization of Unitary Transformations with Spin-Adapted Generators
An exact factorization expresses spin-adapted unitaries as products of Pauli exponentials by reformulating the problem as low-dimensional optimization in the adjoint representation of small Lie algebras.