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arXiv 2602.09895cond-mat.supr-concond-mat.dis-nn
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在清洁的约瑟夫森结链中缓慢的热传播

Logarithmically slow heat propagation in a clean Josephson-junction chain

Dipartimento di Fisica “E. Pancini”, Università di Napoli Federico II(那不勒斯费德里科二世大学物理系)

Angelo Russomanno

AI总结:

研究显示,在清洁的约瑟夫森结链中,热传播呈现对数缓慢特性,而非扩散,这一现象在经典玻璃哈密顿系统中也观察到。

摘要:

我们考虑了一个清洁的约瑟夫森结链,其一端通过电阻连接到热浴。在经典极限下考虑兰格-恩动态,在约瑟夫森能量远小于充电能量的情况下,我们发现热量通过系统传播的速度是对数性的,而不是扩散性的。这通过我们定义的热化长度随时间的对数增长以及能量随时间的对数性增长得到突出。这种行为——典型于量子安德森或许多体局域化系统——也出现在一个清洁的经典玻璃哈密顿系统中。我们认为这种现象可能意味着在电荷量子化情况下非 ergodic 行为对 ergodic 包含物影响的强鲁棒性。

英文摘要:

We consider a clean Josephson-junction chain coupled by one of its extremities to a thermal bath through a resistance. Considering the Langevin dynamics in the classical regime, in the case of Josephson energy much smaller than charging energy, we find that heat propagates logarithmically slowly through the system, rather than diffusively, as highlighted by the logarithmic increase in time of a thermalization length we define and by the logarithmically slow increase in time of the energy. This behavior -- typical of quantum Anderson or many-body localized systems -- is observed here also in a clean classical glassy Hamiltonian system. We argue that this phenomenon might imply strong robustness to the effect of ergodic inclusions for the nonergodic behavior in the charge-quantized regime.

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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