arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2107.07802cond-mat.str-elhep-th
收藏

金属中的普朗克耗散

Planckian Dissipation in Metals

Sean A. Hartnoll, Andrew P. Mackenzie

摘要:

我们回顾了普朗克时间$τ_\text{Pl} = \hbar/(k_B T)$在常规和非常规金属中的出现。我们给出了一个教学讨论的各种不同的时间尺度(准粒子,运输,多体)的特点金属,强调条件下,这些时间是相同或不同的。在整个过程中,我们一直试图澄清这个问题中令我们困惑的方面,希望这对读者也有帮助。我们讨论了从准粒子和多体的角度来看,普朗克约束耗散的可能性。普朗克准粒子可以从非弹性散射和质量重整化的结合中自然产生。另一方面,多体动力学受到局部热化的基本时间尺度和长度尺度的限制。

英文摘要:

We review the appearance of the Planckian time $τ_\text{Pl} = \hbar/(k_B T)$ in both conventional and unconventional metals. We give a pedagogical discussion of the various different timescales (quasiparticle, transport, many-body) that characterize metals, emphasizing conditions under which these times are the same or different. Throughout, we have attempted to clear up aspects of the problem that had been confusing us, in the hope that this helps the reader as well. We discuss the possibility of a Planckian bound on dissipation from both a quasiparticle and a many-body perspective. Planckian quasiparticles can arise naturally from a combination of inelastic scattering and mass renormalization. Many-body dynamics, on the other hand, is constrained by the basic time- and length- scales of local thermalization.

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。

↑