Anomalous relaxation of density waves in a ring-exchange system

Autor:	Patil, Pranay, Heyl, Markus, Alet, Fabien
Rok vydání:	2022
Předmět:	Quantum Physics Condensed Matter - Disordered Systems and Neural Networks Condensed Matter - Statistical Mechanics Condensed Matter - Strongly Correlated Electrons Nonlinear Sciences - Cellular Automata and Lattice Gases
Zdroj:	Phys. Rev. E 107, 034119 (2023)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevE.107.034119
Popis:	We present the analysis of the slowing down exhibited by stochastic dynamics of a ring-exchange model on a square lattice, by means of numerical simulations. We find the preservation of coarse-grained memory of initial state of density-wave types for unexpectedly long times. This behavior is inconsistent with the prediction from a low frequency continuum theory developed by assuming a mean-field solution. Through a detailed analysis of correlation functions of the dynamically active regions, we exhibit an unconventional transient long ranged structure formation in a direction which is featureless for the initial condition, and argue that its slow melting plays a crucial role in the slowing-down mechanism. We expect our results to be relevant also for the dynamics of quantum ring-exchange dynamics of hard-core bosons and more generally for dipole moment conserving models Comment: 15 pages, 14 figures, data for all figures available at https://zenodo.org/record/7417752#.ZDpocvIzY5l
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2211.16788 Zobrazit plný text záznamu View this record from Arxiv