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arXiv 2103.02030cond-mat.str-el
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库仑作用下一维费米子气体中的准粒子能量弛豫

Quasiparticle energy relaxation in a gas of one-dimensional fermions with Coulomb interaction

Zoran Ristivojevic, K. A. Matveev

摘要:

本文研究了低温下一维带电自旋$\frac{1}{2}$费米子系统。我们研究了在弱相互作用下,高激发态准粒子(或空穴)的能量如何向化学势弛豫。主要的弛豫过程涉及与另外两个费米子的碰撞。我们发现在低能量的弛豫速率的显着增强,与率缩放为激发能的倒数六次方。这种行为是由库仑相互作用的长程性质引起的。

英文摘要:

We consider a system of charged one-dimensional spin-$\frac{1}{2}$ fermions at low temperature. We study how the energy of a highly-excited quasiparticle (or hole) relaxes toward the chemical potential in the regime of weak interactions. The dominant relaxation processes involve collisions with two other fermions. We find a dramatic enhancement of the relaxation rate at low energies, with the rate scaling as the inverse sixth power of the excitation energy. This behavior is caused by the long-range nature of the Coulomb interaction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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