{"paper":{"title":"Spin-projected matrix product states (SP-MPS): a versatile tool for strongly correlated systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"physics.chem-ph","authors_text":"Garnet Kin-Lic Chan, Zhendong Li","submitted_at":"2017-03-14T22:35:39Z","abstract_excerpt":"We present a new wavefunction ansatz that combines the strengths of spin projection with the language of matrix product states (MPS) and matrix product operators (MPO) as used in the density matrix renormalization group (DMRG). Specifically, spin-projected matrix product states (SP-MPS) are constructed as $|\\Psi^{(N,S,M)}_{SP-MPS}\\rangle=\\mathcal{P}_S|\\Psi_{MPS}^{(N,M)}\\rangle$, where $\\mathcal{P}_S$ is the spin projector for total spin $S$ and $|\\Psi_{MPS}^{(N,M)}\\rangle$ is an MPS wavefunction with a given particle number $N$ and spin projection $M$. This new ansatz possesses several attract"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.04789","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}