Thermalization of one-dimensional classical lattices:beyond the weakly interacting regime  

作　　者：Zhen Wang Weicheng Fu Yong Zhang Hong Zhao 王振;符维成;张勇;赵鸿(CAS Key Laboratory of Theoretical Physics and Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China;Department of Physics,Xiamen University,Xiamen 361005,China;Department of Physics,Tianshui Normal University,Tianshui 741001,China;Lanzhou Center for Theoretical Physics and Key Laboratory of Theoretical Physics of Gansu Province,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]CAS Key Laboratory of Theoretical Physics and Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [2]Department of Physics,Xiamen University,Xiamen 361005,China [3]Department of Physics,Tianshui Normal University,Tianshui 741001,China [4]Lanzhou Center for Theoretical Physics and Key Laboratory of Theoretical Physics of Gansu Province,Lanzhou University,Lanzhou 730000,China

出　　处：《Communications in Theoretical Physics》2024年第11期135-144,共10页理论物理通讯（英文版）

基　　金：partially supported by the National Natural Science Foundation of China (Grant Nos.11925507,12047503,11975190,12247106,12005156,12247101 and 12465010);the support from the Youth Talent (Team)Project of Gansu Province;from the Innovation Fund from Department of Education of Gansu Province (Grant No.2023A-106)。

摘　　要：Thermalization in many-body systems,especially with strong interactions,is a central question in physics.In this work,we present a novel framework for the thermalization of interacting wave systems,distinguishing between trivial(no momentum exchange)and nontrivial interactions(significant energy redistribution).This distinction leads to a statistically equivalent model with weakened interactions.By applying this to FPUT-like models,we identify a unique double scaling of thermalization times.Crucially,our findings suggest the persistence of prethermalization in strong interactions.

关 键 词：THERMALIZATION energy diffusion lattice model strong interaction prethermalization generalized Gibbs ensemble multi-wave resonances 

分 类 号：O414[理学—理论物理]