标题： 增强相互作用的多体局域化在具有长程跃迁的一维准周期模型中 显示英文标题

标题： Interaction-enhanced many-body localization in a 1D quasiperiodic model with long-range hopping

摘要： 我们研究了在具有长程跃迁和准周期局域势的1D精确可解系统中的多体局域化（MBL）相变，该系统在Phys. Rev. Lett. 131, 186303 (2023)中提出。与其他无序或准周期模型不同，在中等相互作用区域内会发生增强相互作用的MBL，这被称为增强相互作用的MBL。这种反直觉现象可以通过注意到位于能谱底部的临界带的脆弱性来理解。一旦开启相互作用，该脆弱带就会被其他局域态局域化。通过引入一种平均场理论描述可以验证这一机制，该理论能够以高精度推导出高度激发态。该平均场理论的有效性由准空穴物理所捕捉，并通过粒子纠缠谱得到验证。 显示英文摘要

摘要： We study the many-body localization (MBL) transition in an 1D exactly solvable system with long-range hopping and quasiperiodic on-site potential introduced in Phys. Rev. Lett. 131, 186303 (2023). Unlike other disorder or quasiperiodic model, an interaction-enhanced MBL happens in the moderate interaction regime, which is dubbed as the interaction-enhanced MBL. This counterintuitive phenomenon can be understood by noticing the fragility of the critical band lying at the bottom of the spectrum. The fragile band is localized by other localized states once the interaction is turned on. This mechanism can be verified by introducing a mean-field theory description which can derive highly excited states with high accuracy. The effectiveness of this mean-field theory is captured by the quasihole physics, validated by the particle entanglement spectra.