应用于非零温NRQCD介子关联函数的谱重建方法比较
高能物理 - 格点
2022-02-16 v1
摘要
我们展示了fastsum合作组确定底偶素系统谱随温度变化的研究结果。讨论了三种提取谱信息的不同方法：一种对基态使用高斯谱函数的最大似然法、Backus Gilbert方法以及核岭回归机器学习程序。我们采用fastsum的各向异性晶格，包含2+1种动力学夸克味，温度范围从47到375 MeV。
引用
@article{arxiv.2112.04201,
title = {A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions},
author = {Thomas Spriggs and Gert Aarts and Chris Allton and Timothy Burns and Rachel Horohan D'Arcy and Benjamin Jäger and Seyong Kim and Maria-Paola Lombardo and Sam Offler and Ben Page and Sinead M. Ryan and Jon-Ivar Skullerud},
journal= {arXiv preprint arXiv:2112.04201},
year = {2022}
}
备注
8 pages, 4 figures. Presented at A Virtual Tribute to Quark Confinement and the Hadron Spectrum, August 2-6 2021, University of Stavanger, Stavanger, Norway