Observing chiral nonanalytic behavior with FLIC fermions
✍ Scribed by D.B. Leinweber; A.W. Thomas; A.G. Williams; R.D. Young; J.M. Zanotti; J.B. Zhang
- Book ID
- 103865187
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 330 KB
- Volume
- 737
- Category
- Article
- ISSN
- 0375-9474
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✦ Synopsis
First results from lattice QCD revealing the chiral nonanalytic behavior of nucleon and A baryon magnetic moments are presented. Numerical simulations in the light quark mass regime employing the nonperturbatively O(a)-improved conserved vector current are enabled via. FLIC fermions. Quenched chiral perturbation theory for the nucleon and A magnetic moments is derived to next to next to leading nonanalytic order. Numerical simulation results for the proton and A baryon magnetic moments in quenched QCD reveal dramatic signatures of the quenched meson cloud, which are in accord with the predictions of quenched chiral perturbation theory.