相互作用淬火所揭示的普遍动力学

IF 17.6 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Chandrasekhar Ramanathan
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引用次数: 0

摘要

一个量子系统的初始状态如果不是其哈密顿的特征状态,那么它就会表现出失衡动力学。这些动力学可以跨越多个时间尺度,从局部相关性的瞬时响应到系统的长时间平衡。根据初始状态、相互作用的性质和测量的观测指标,可能性似乎很大。李宇晨及其同事在《自然-物理》(Nature Physics)杂志上报告说,他们观察到使用固态核磁共振(NMR)测量的局部磁化相关性的失衡动态遵循一种普遍形式1。先前的研究表明,该信号应遵循一种普遍形式,相关性衰减为简单指数(exp(-γt))或阻尼振荡(cos(ωt)exp(-γt))(参考文献 3、4)。对包括多晶氙晶格和氟化钙在内的多种系统进行的仔细核磁共振实验5,6 证实了这种行为。此外,在氟化钙中还观察到了第二种振荡衰变模式7。然而,这些普遍衰变与底层哈密顿参数之间的联系仍不清楚,这限制了在更普遍的环境中预测这些普遍模式的可能性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Universal dynamics exposed by interaction quenches

Universal dynamics exposed by interaction quenches

Universal dynamics exposed by interaction quenches
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来源期刊
Nature Physics
Nature Physics 物理-物理:综合
CiteScore
30.40
自引率
2.00%
发文量
349
审稿时长
4-8 weeks
期刊介绍: Nature Physics is dedicated to publishing top-tier original research in physics with a fair and rigorous review process. It provides high visibility and access to a broad readership, maintaining high standards in copy editing and production, ensuring rapid publication, and maintaining independence from academic societies and other vested interests. The journal presents two main research paper formats: Letters and Articles. Alongside primary research, Nature Physics serves as a central source for valuable information within the physics community through Review Articles, News & Views, Research Highlights covering crucial developments across the physics literature, Commentaries, Book Reviews, and Correspondence.
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