The appearance of the Planckian time ${\tau }_{\mathrm{Pl}}=\hslash /k_{B}T$ is reviewed in both conventional and unconventional metals. A pedagogical discussion of the various different timescales (quasiparticle, transport, many-body) that characterize metals is given, with an emphasis on conditions under which these times are the same or different. The possibility of a Planckian bound on dissipation is discussed 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 timescales and length scales of local thermalization.

中文翻译：

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座谈会：金属中的普朗克耗散

普朗克时代的出现${\tau }_{\mathrm{PL}}=\hslash /k_{乙}\mathrm{时间}$对传统金属和非常规金属进行了审查。给出了表征金属的各种不同时间尺度（准粒子、输运、多体）的教学讨论，重点是这些时间相同或不同的条件。从准粒子和多体的角度讨论了普朗克耗散界的可能性。普朗克准粒子可以自然地由非弹性散射和质量重正化的组合产生。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。