Quantum flutter of supersonic particles in one-dimensional quantum liquids

ORAL

Abstract

We study the dynamics of an impurity injected at a supersonic velocity into a 1D gas of hardcore bosons, or faster than the Fermi velocity in a fully polarized Fermi gas. We find that at long times the momentum of the impurity does not decay to zero, and demonstrate that the system exhibits a new type of coherent oscillation in which the impurity vibrates with respect to its correlation hole.

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Authors

  • Charles Mathy

    Institute for Theoretical Atomic, Molecular and Optical Physics

  • Mikhail Zvonarev

    Physics Department, Harvard University

  • Eugene Demler

    Physics Department, Harvard University, Harvard-MIT Center for Ultracold Atoms, Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA