TY - JOUR PB - American Physical Society ID - 10.1103/Physics.2.56 TI - Quasiparticle doppelgängers JF - Physics JA - Physics J1 - PHYSICS VL - 2 IS - SP - 56 EP - PY - 2009/06/29/ UR - http://link.aps.org/doi/10.1103/Physics.2.56 A1 - Grayson, Matthew ER -