Quantum-classical framework for many-fermion response and structure
Institute of Modern Physics, Chinese Academy of Sciences（中国科学院近代物理研究所）；Department of Physics and Astronomy, Iowa State University（爱荷华州立大学物理与天文系）；Advanced Energy Science and Technology, Guangdong Laboratory（广东省实验室先进能源科学与技术）；Applied Mathematics and Computational Research Division, Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室应用数学与计算研究部）
Weijie Du, Yangguang Yang, Zixin Liu, Chao Yang, James P. Vary
Response functions are key observables for probing the structure and dynamics of many-body systems. We introduce and demonstrate a quantum-classical framework for computing response functions of general many-fermion systems that also provides the full bound-state spectrum. The framework employs the Lorentz integral transform and a new Hamiltonian input scheme that enables practical and scalable circuit constructions for general many-fermion Hamiltonians. Within this framework, we develop a hybrid strategy to evaluate the Lorentz integral and propose three protocols to extract response functions and bound-state structural information. As a demonstration, we apply the method to \({}^{19}\mathrm{O}\) with realistic internucleon interactions, computing both the bound-state spectrum and the response function. We envision that our approach will open new avenues for exploring the structure and dynamics of a broad class of many-body systems across diverse fields.
Equilibrium Thermodynamics of Non-Hermitian Dirac Fermions: Caloric and Magnetic Responses
Facultad de Ingeniería, Universidad San Sebastián（圣塞巴斯蒂安大学工程学院）；Departamento de Física, Universidad Técnica Federico Santa María（智利联邦理工大学物理系）；Instituto de Física, Pontificia Universidad Católica de Valparaíso（天主教瓦尔帕莱索大学物理研究所）
Hamiltonian Lattice QED$_3$ with One and Two Flavors of Wilson Fermions: Topological Structure and Response
Mani L. Bhaumik Institute for Theoretical Physics, Department of Physics and Astronomy, University of California, Los Angeles（加州大学洛杉矶分校物理与天文学系马尼·L·巴乌米克理论物理研究所）；Transdisciplinary Research Area “Building Blocks of Matter and Fundamental Interactions” (TRA Matter) and Helmholtz Institute for Radiation and Nuclear Physics (HISKP), University of Bonn（波恩大学跨学科研究领域“物质基本组成与基本相互作用”（TRA Matter）及亥姆霍兹辐射与核物理研究所（HISKP））；Deutsches Elektronen-Synchrotron DESY（德国电子同步加速器研究所（DESY））；Department of Physics, Massachusetts Institute of Technology（麻省理工学院物理系）；Computation-Based Science and Technology Research Center, The Cyprus Institute（塞浦路斯研究所计算科学与技术研究中心）；Department of Physics, Tsinghua University（清华大学物理系）
