TY - JOUR AU - Brennen, G AU - Bullock, S C2 - Physical Review A (Atomic, Molecular and Optical Physics) DA - 2004-01-01 LA - en M1 - 70 PB - Physical Review A (Atomic, Molecular and Optical Physics) PY - 2004 TI - Stability of global entanglement in thermal states of spin chains ER -