TY - JOUR AU - T. Walker AU - D. Sesko AU - Carl Wieman BT - Physical Review Letters DA - Jan-01-1990 DO - 10.1103/PhysRevLett.64.408 PY - 1990 SP - 408 EP - 411 T2 - Physical Review Letters TI - Collective behavior of optically trapped neutral atoms VL - 64 SN - 0031-9007 ER -