晶格QCD的介子-核子散射振幅

PROCEEDINGS OF THE 15TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON Pub Date : 2019-09-28 DOI:10.1063/5.0008643

J. Bulava

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引用次数: 4

摘要

由于算法和计算的进步，谐振介子-介子散射振幅的点阵QCD计算有了显着的改进。然而，由于计算必要的相关函数、指数信噪问题和费米子散射的有限体积处理困难，介子-核子散射的进展一直较慢。尽管如此，现在已经执行了第一个基准计算。综述了介子-核子散射振幅的晶格QCD计算的现状，并对其发展前景作了展望。

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Meson-nucleon scattering amplitudes from lattice QCD

Lattice QCD calculations of resonant meson-meson scattering amplitudes have improved significantly due to algorithmic and computational advances. However, progress in meson-nucleon scattering has been slower due to difficulties in computing the necessary correlation functions, the exponential signal-to-noise problem, and the finite-volume treatment of scattering with fermions. Nonetheless, first benchmark calculations have now been performed. The status of lattice QCD calculations of meson-nucleon scattering amplitudes is reviewed together with comments on future prospects.

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PROCEEDINGS OF THE 15TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON

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