Wave-function positivization via automatic differentiation
Giacomo Torlai, Juan Carrasquilla, Matthew T. Fishman, Roger G. Melko, Matthew P. A. Fisher
Abstract
The authors introduce a numerical algorithm combining combines tensor networks and automatic differentiation to uncover a local unitary transformation that removes the sign structure from a quantum wavefunction.
Topics & Concepts
Automatic differentiationComputer scienceUnitary transformationTensor (intrinsic definition)AlgorithmTransformation (genetics)Sign (mathematics)Artificial intelligenceMathematicsUnitary stateQuantumTheoretical computer scienceAlgebra over a fieldTensor productScheme (mathematics)Computer visionBasis (linear algebra)Numerical differentiationQuantum Computing Algorithms and ArchitectureQuantum many-body systemsQuantum Information and Cryptography