Second Sound in Systems of One-Dimensional Fermions.
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DOI: 10.1103/physrevlett.119.266801
Abstract: We study sound in Galilean invariant systems of one-dimensional fermions. At low temperatures, we find a broad range of frequencies in which in addition to the waves of density there is a second sound corresponding… read more here.
Keywords: second sound; sound systems; one dimensional; systems one ... See more keywords