2026-05-29 中国科学院（CAS）
＜関連情報＞
- https://english.cas.cn/newsroom/research-news/202605/t20260529_1160099.shtml
- https://www.sciencedirect.com/science/article/pii/S0370269326003916
多フェルミオン応答と構造のための量子古典計算フレームワーク Quantum-classical computational framework for many-fermion response and structure
Weijie Du, Yangguang Yang, Zixin Liu, Chao Yang, James P. Vary
Physics Letters B Available online: 12 May 2026
DOI:https://doi.org/10.1016/j.physletb.2026.140538
Abstract
Response functions are key observables for probing the structure and dynamics of many-body systems. We present and demonstrate a quantum-classical computational 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 recently developed Hamiltonian input scheme that enables practical and scalable circuit constructions for general many-fermion Hamiltonians. Within this framework, we evaluate the Lorentz integral and propose three protocols to extract response functions and bound-state structural information. We apply the method to 19O with realistic internucleon interactions, computing both the bound-state spectrum and the response function. This demonstration indicates opportunities for exploring the structure and dynamics of a broad class of many-body systems across diverse fields.
