Baryon magnetic moments in the background field method
F.X. Lee, R. Kelly, L. Zhou, W. Wilcox
TL;DR
This paper calculates baryon magnetic moments using lattice QCD with the background-field method, exploring the response of baryon masses to magnetic fields on a quenched lattice at various pion masses.
Contribution
It introduces a lattice QCD approach to compute baryon magnetic moments via the background-field method in the quenched approximation.
Findings
Magnetic moments are obtained from the linear response of baryon masses to magnetic fields.
Progress is made in calculating moments at pion masses down to about 500 MeV.
The method demonstrates how to extract magnetic moments from lattice simulations.
Abstract
We present a calculation of the magnetic moments for the baryon octet and decuplet using the background-field method and standard Wilson gauge and fermion actions in the quenched approximation of lattice QCD. Progressively smaller static magnetic fields are introduced on a lattice at beta=6.0 and the pion mass is probed down to about 500 MeV. Magnetic moments are extracted from the linear response of the masses to the background field.
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