Critical point of the transition between s±s_\pm and s++s_{++} states of a two-band superconductor with nonmagnetic impurities

该论文研究了含非磁性杂质的双带非常规s±s_\pm超导体的热力学行为,发现s±s_\pms++s_{++}的相变在高温下为平滑交叉,而在低温下转变为一级相变,从而在温度 - 杂质散射率相图中形成了一个临界终点,并指出在远离玻恩极限时该转变温度趋于零,暗示了量子相变的可能性。

V. A. Shestakov, M. M. KorshunovWed, 11 Ma🔬 cond-mat

Analytic treatment of a polaron in a nonparabolic conduction band

该论文通过扩展费曼变分法并推广其他解析方法,为有限宽度非抛物线能带中的晶格极化子(包括具有自旋轨道耦合的体系)提供了一种适用于弱、中、强耦合全范围的统一解析描述框架,其结果在基态能量和色散关系上展现出与数值精确计算高度吻合的优异精度。

S. N. Klimin (TQC, Departement Fysica, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium), J. Tempere (TQC, Departement Fysica, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium), M. Houtput (TQC, Departement Fysica, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium), I. Zappacosta (TQC, Departement Fysica, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerpen, Belgium), S. Ragni (Department for Research of Materials under Extreme Conditions, Institute of Physics, 10000 Zagreb, Croatia), T. Hahn (Center for Computational Quantum Physics, Flatiron Institute, 162 5th Avenue, New York, New York 10010, USA), L. Celiberti (Faculty of Physics, Computational Materials Physics, University of Vienna, Kolingasse 14-16, Vienna A-1090, Austria), C. Franchini (Faculty of Physics, Computational Materials Physics, University of Vienna, Kolingasse 14-16, Vienna A-1090, Austria), A. S. Mishchenko (Department for Research of Materials under Extreme Conditions, Institute of Physics, 10000 Zagreb, Croatia)Wed, 11 Ma🔬 cond-mat

Evidence of universal spectral collapse at a marginal dynamical regime

该研究通过引入与竞争涨落相关的自生成动力学无序模型,揭示了强关联材料中非相干电子谱的普适性,并证明在 Nd2-xCexCuO4、Bi2Sr2CaCu2O8+δ、CsCr3Sb5 和 La3Ni2O7 等多种材料中,经重标度后的角分辨光电子能谱数据均坍缩至由固定参数ν=-1/2 定义的单一普适曲线,表明低能下微观细节变得无关紧要。

Udomsilp Pinsook, Pakin Tasee, Jakkapat SeeyangnokWed, 11 Ma🔬 cond-mat

Non-equilibrium generalized Langevin equation for multi-dimensional observables

本文基于含时多体哈密顿量和多维 Mori 投影算符,推导了描述多维可观测量的非平衡广义朗之万方程,揭示了马尔可夫力中瞬时摩擦项的存在及其与分量相关性条件的关系,并展示了该框架在模拟生物复杂系统(如 IAPP 纤维化过程中的蛋白质折叠耦合动力学)中的应用潜力。

Benjamin J. A. Héry (Department of Physics of Freie Universität Berlin), Lucas Tepper (Department of Physics of Freie Universität Berlin), Andrea Guljas (Department of Physics of Freie Universität Berlin), Artem Pavlov (Institut für Chemie und Biochemie of Freie Universität Berlin), Beate Koksch (Institut für Chemie und Biochemie of Freie Universität Berlin), Cecilia Clementi (Department of Physics of Freie Universität Berlin), Roland R. Netz (Department of Physics of Freie Universität Berlin)Wed, 11 Ma🔬 cond-mat

Three phases of odd robotic active matter

该研究通过引入可调控的 MASBot 机器人集群,首次在单一实验系统中实现了从奇弹性晶体到奇粘性液体再到手性活性气体的相变,构建了非互易活性物质的统一相图,并揭示了其作为可编程物质状态在基础物理验证与智能群体重构方面的潜力。

Fan Bo, Shiqi Liu, Zenghong He, Wyatt Joyce, Gregor Leech, Kiet Tran, Keilan Ramirez, Nicholas Boechler, Nicholas Gravish, Hongbo Zhao, Tzer Han TanWed, 11 Ma🔬 cond-mat