Wave Packet Dynamics in Synthetic Non-Abelian Gauge Fields

  title={Wave Packet Dynamics in Synthetic Non-Abelian Gauge Fields},
  author={M. Zahid Hasan and Chetan Sriram Madasu and Ketan D. Rathod and Chang Chi Kwong and Christian Miniatura and Fr{\'e}d{\'e}ric Chevy and David Wilkowski},
  journal={Physical Review Letters},
It is generally admitted that in quantum mechanics, the electromagnetic potentials have physical interpretations otherwise absent in classical physics as illustrated by the Aharonov-Bohm effect. In 1984, Berry interpreted this effect as a geometrical phase factor. The same year, Wilczek and Zee generalized the concept of Berry phases to degenerate levels and showed that a non-Abelian gauge field arises in these systems. In sharp contrast with the Abelian case, spatially uniform non-Abelian gauge… 

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