TY - RPRT TI - Diverging entanglement length in gapped quantum spin systems. AU - F Verstraete AU - M A Martín-Delgado AU - J I Cirac PY - 2004 DO - 10.1103/physrevlett.92.087201 UR - https://pubmed.ncbi.nlm.nih.gov/14995807/ ID - 14995807 ER -