2026 年 09 月 25 日
论文筛选日报

基于行列式量子蒙特卡洛，作者发现二维吸引和排斥 Hubbard 模型在 |U|/t=6 时尽管低能关联截然不同，仍在宽广中高温区共同呈现近似线性温度电阻率，其主要来源是近似 Curie 型电荷可压缩率与弱温度依赖的扩散率。

• attractive and repulsive Hubbard models
• strong-coupling correlations
• strange-metal transport
• linear-in-temperature resistivity

作者研究了邻近单电子或单空穴抛物量子点的有限尺寸扭转双层 MoTe2 体系，发现其在 1/3 填充形成不可压缩自旋非极化分数 Chern 绝缘体，并预测低能准粒子与准空穴为自旋非极化态。

• twisted bilayer MoTe2
• fractional Chern insulator
• anyonic quasiparticles
• spin-polarized and spin-unpolarized excitations

在 2H-AgNiO2 单晶中，高达 45 T 的角度和磁场依赖扭矩测量揭示了第一自旋超固态附近的锯齿状角向信号及四个场致异常，而平均场和蒙特卡洛计算表明这些特征可定性理解为旋转磁场穿越不同磁相边界的结果。

• triangular-lattice antiferromagnet
• field-induced spin supersolid
• magnetic-field phase transitions
• angular torque measurements

Directly addresses sign-problem control and continuous-time fermion-bag Monte Carlo for an interacting lattice model.

• quantum Monte Carlo
• fermion-bag formulation
• continuous-time expansion
• sign-problem severity

Directly maps nonreciprocal and complex-potential forms of non-Hermiticity and analyzes their exceptional-point structure.

• non-Hermitian skin effect
• PT symmetry
• exceptional points
• imaginary potential

Directly benchmarks GW and vertex corrections across weak-coupling and Mott regimes of the extended Hubbard model, including Hubbard-band formation.

• extended Hubbard model
• Mott regime
• Hubbard gap
• dynamical self-energy

Directly formulates biorthogonality and self-orthogonality in non-Hermitian electromagnetic systems and connects them to exceptional points.

• biorthogonal modes
• left and right eigenstates
• exceptional points
• gain and loss

Directly studies Floquet engineering of an interacting Hubbard model and derives a drive-stabilized ferrimagnetic half-metal.

• periodically driven Hubbard model
• Floquet Hamiltonian
• dynamical localization
• light-induced half-metal

Directly computes nonlinear shift-current response and its material and spectral dependence in two-dimensional hybrid perovskites.

• shift current
• bulk photovoltaic response
• nonlinear optical response
• first-principles calculations

Directly studies collective polar-skyrmion correlations and their relaxor-like response in ferroelectric superlattices.

• polar skyrmion correlations
• ferroelectric superlattices
• phase-field simulation
• relaxor-like response