TY - JOUR AU - Pérez García, David AU - Wolf, M.M. AU - Sanz, M. AU - Verstraete, F. AU - Cirac, J.I. PY - 2008 DO - 10.1103/PhysRevLett.100.167202 SN - 0031-9007 UR - https://hdl.handle.net/20.500.14352/50312 T2 - Physical Review Letters AB - We show that the existence of string order in a given quantum state is intimately related to the presence of a local symmetry by proving that both concepts are equivalent within the framework of finitely correlated states. Once this connection is... LA - eng M2 - 167202 PB - The American Physical Society TI - String order and symmetries in quantum spin lattices TY - journal article VL - 100 ER -