Interference between independent fluctuating condensates.

  title={Interference between independent fluctuating condensates.},
  author={Anatoli S. Polkovnikov and Ehud Altman and Eugene A. Demler},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={103 16},
We consider a problem of interference between two independent condensates that lack true long-range order. We show that their interference pattern contains information about correlation functions within each condensate. As an example, we analyze the interference between a pair of one-dimensional interacting Bose liquids. We find universal scaling of the average fringe contrast with system size and temperature that depends only on the Luttinger parameter. Moreover, the full distribution of the… CONTINUE READING