Almost Perfect Metals in One Dimension.,Physical Review Letters

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Almost Perfect Metals in One Dimension.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-04-03 , DOI: 10.1103/physrevlett.124.136801
Chaitanya Murthy ₁ , Chetan Nayak _{1,

2}

Affiliation

We show that a one-dimensional quantum wire with as few as two channels of interacting fermions can host metallic states of matter that are stable against all perturbations up to qth order in fermion creation or annihilation operators for any fixed finite q. Thus, the leading relevant perturbations are complicated operators that are expected to modify the physics only at very low energies, below accessible temperatures. The stability of these non-Fermi liquid fixed points is due to strong interactions between the channels, which can (but need not) be chosen to be purely repulsive. Our results might enable elementary physical realizations of these phases.

中文翻译：

一维几乎完美的金属。

我们表明，具有少至两个相互作用的费米子通道的一维量子线可以容纳对任何固定有限q的费米子产生或an灭算子中的所有q阶扰动都稳定的物质金属态。因此，最主要的相关扰动是复杂的运算符，它们仅在非常低的能量（低于可访问的温度）下才能修改物理。这些非费米液体固定点的稳定性归因于通道之间的强相互作用，可以（但不必）选择这些通道为纯斥力的。我们的结果可能会实现这些阶段的基本物理实现。

更新日期：2020-03-30

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