Xu Zhang

PhD candidate

Department of Physics, HKU

Room 525, CYM Physics Building

Email: zx0417@connect.hku.hk

Research interest

· Strongly Correlated System: Numerical solution based on quantum Monte Carlo
· Quantum Flat Band System: Analytical and numerical computation on ground state property, transport and phase transition

Education
2020 - present The University of Hong Kong
PhD student, Physics
2015 - 2019 Nankai University
Bachelor of Science, Physics
Employment & Exchange Experience
2019 - 2020 Institute of Physics, Chinese Academy of Sciences
Research Assistant, Advisors: Jiangping Hu, Zi Yang Meng
2023 University of Michigan
ICAM QuantEmX Junior Short-Term Visitor, Host: Kai Sun

Publications

2024 “Integral algorithm of exponential observables for interacting fermions in quantum Monte Carlo simulations”
Xu Zhang, Gaopei Pan, Bin-Bin Chen, Kai Sun, and Zi Yang Meng
Phys. Rev. B 109.205147
arXiv:2311.03448
2023 “Phases of (2+1)D SO(5) non-linear sigma model with a topological term on a sphere: multicritical point and disorder phase”
Bin-Bin Chen, Xu Zhang, Yuxuan Wang, Kai Sun, Zi Yang Meng
arXiv:2307.05307
2023 “Evolution from quantum anomalous Hall insulator to heavy-fermion semimetal in twisted bilayer graphene”
Cheng Huang, Xu Zhang, Gaopei Pan, Heqiu Li, Kai Sun, Xi Dai, Zi Yang Meng
Physical Review B 109 (12), 125404
arXiv:2304.14064
2023 “The "Sign problem" of the 3rd order anomalous Hall effect in topological magnetic materials”
X Zhang, K Sun, ZY Meng
arXiv:2303.00819
2023 “Polynomial sign problem and topological Mott insulator in twisted bilayer graphene”
X Zhang, G Pan, BB Chen, H Li, K Sun, ZY Meng
Phys. Rev. B 107, L241105
arXiv:2210.11733
2023 “Intrinsic Nonlinear Hall Effect and Gate-Switchable Berry Curvature Sliding in Twisted Bilayer Graphene”
M Huang, Z Wu, X Zhang, X Feng, Z Zhou, S Wang, Y Chen, C Cheng, ...
Phys. Rev. Lett. 131, 066301 (2023) Editors' Suggestion
arXiv:2212.12666
2023 “Thermodynamic Characteristic for a Correlated Flat-Band System with a Quantum Anomalous Hall Ground State”
G Pan, X Zhang, H Lu, H Li, BB Chen, K Sun, ZY Meng
Phys. Rev. Lett. 130, 016401 (2023)
arXiv:2207.07133
2022 Superconductivity and bosonic fluid emerging from moiré flat bands
X Zhang, K Sun, H Li, G Pan, ZY Meng
Physical Review B 106 (18), 184517
arXiv:2111.10018
2022 Fermion sign bounds theory in quantum Monte Carlo simulation
X Zhang, G Pan, XY Xu, ZY Meng
Physical Review B 106 (3), 035121
arXiv:2112.06139
2022 “Dynamical properties of collective excitations in twisted bilayer graphene”
G Pan, X Zhang, H Li, K Sun, ZY Meng
Physical Review B 105 (12), L121110
arXiv:2108.12559
2021 “Momentum space quantum monte carlo on twisted bilayer graphene
X Zhang, G Pan, Y Zhang, J Kang, ZY Meng
Chinese Physics Letters 38 (7), 077305
arXiv:2105.07010
Novel
2022 阿龙探案蒙特卡洛符号问题 Start reading
Research News
2023 Unlock Tunable Nonlinear Hall Effect in Twisted Bilayer Graphene Start reading