Efficient few-body calculations in finite volume

被引：2

作者：

Konig, S. ^{[1
]}

机构：

[1] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

13TH INTERNATIONAL SPRING SEMINAR ON NUCLEAR PHYSICS PERSPECTIVES AND CHALLENGES IN NUCLEAR STRUCTURE AFTER 70 YEARS OF SHELL MODEL, ISS 2022 | 2023年 / 2453卷

基金：

美国国家科学基金会;

关键词：

QUANTUM-FIELD THEORIES; ENERGY-SPECTRUM; DEPENDENCE; STATES;

D O I：

10.1088/1742-6596/2453/1/012025

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Simulating quantum systems in a finite volume is a powerful theoretical tool to extract information about them. Real-world properties of the system are encoded in how its discrete energy levels change with the size of the volume. This approach is relevant not only for nuclear physics, where lattice methods for few- and many-nucleon states complement phenomenological shell-model descriptions and ab initio calculations of atomic nuclei based on harmonic oscillator expansions, but also for other fields such as simulations of cold atomic systems. This contribution presents recent progress concerning finite-volume simulations of fewbody systems. In particular, it discusses details regarding the efficient numerical implementation of separable interactions and it presents eigenvector continuation as a method for performing robust and efficient volume extrapolations.

引用

页数：9

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