A hybrid method integrating Green's function Monte Carlo and projected entangled pair states

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外文摘要：This paper introduces a hybrid approach combining Green's function Monte Carlo(GFMC)method with projected entangled pair state(PEPS)ansatz.This hybrid method regards PEPS as a trial state and a guiding wave function in GFMC.By leveraging PEPS's proficiency in capturing quantum state entanglement and GFMC's efficient parallel architecture,the hybrid method is well-suited for the accurate and efficient treatment of frustrated quantum spin systems.As a benchmark,we applied this approach to study the frustrated J1-J2 Heisenberg model on a square lattice with periodic boundary con-ditions(PBCs).Compared with other numerical methods,our approach integrating PEPS and GFMC shows competitive accuracy in the performance of ground-state energy.This paper provides systematic and comprehensive discussion of the approach of our previous work[Phys.Rev.B 109 235133(2024)].

外文关键词：

projected entangled pair statesGreen's function Monte Carlofrustrated J1-J2 Heisenberg model

作者：

林赫羽、贺荣强、郭奕斌、卢仲毅

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作者单位：

Department of Physics,Renmin University of China,Beijing 100872,China

Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education),Renmin University of China,Beijing 100872,China

CQTA,Deutsches Elektronen-Synchrotron DESY,Platanenallee 6,15738 Zeuthen,Germany

Hefei National Laboratory,Hefei 230088,China

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出版年：

2024

DOI：

10.1088/1674-1056/ad84c9

中国物理B(英文版)

中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI

影响因子：0.995

ISSN：1674-1056

年,卷(期)：2024.33(11)