The hierarchy of excitation lifetimes in two-dimensional Fermi gases

Momentum-conserving quasiparticle collisions in two-dimensional Fermi gases give rise to a large family of exceptionally long-lived excitation modes. The lifetimes of these modes exceed by a factor (TF∕T)2≫1 the conventional Landau Fermi-liquid lifetimes τ∼TF∕T2. The long-lived modes have a distinct...

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Veröffentlicht in:	Annals of physics 2019-12, Vol.411, p.167913, Article 167913
Hauptverfasser:	Ledwith, Patrick J., Guo, Haoyu, Levitov, Leonid
Format:	Artikel
Sprache:	eng
Schlagworte:	COLLISIONS EXCITATION FERMI GAS FERMI LEVEL HARMONICS HYDRODYNAMICS NUCLEAR PHYSICS AND RADIATION PHYSICS QUASI PARTICLES TWO-DIMENSIONAL SYSTEMS
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