Second Sound in Systems of One-Dimensional Fermions

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 to the ballistic propagation of heat in the system. The damping of the second sound m...

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Veröffentlicht in:	Physical review letters 2017-12, Vol.119 (26), p.266801-266801, Article 266801
Hauptverfasser:	Matveev, K A, Andreev, A V
Format:	Artikel
Sprache:	eng
Schlagworte:	PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Online-Zugang:	Volltext
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