HEP Lattice·hep-lat
2 papers—1 primary·1 cross-listed·reconstructed*
F.Berruto🇺🇸 · R.Narayanan🇺🇸 · H.Neuberger🇺🇸
Let B be the largest spacing between adjacent eigenvalues of the Polyakov loop. We propose to employ the distribution of B as an order parameter for the finite temperature phase transition in SU(N) lattice gauge theories. Using smeared links to reduce ultraviolet fluctuations, we carry out a test for the gauge group SU(3).
D. B. Leinweber🇦🇺 · A. W. Thomas🇦🇺 · A. G. Williams🇦🇺 · R. D. Young (CSSM, U. Adelaide)🇦🇺 · J. M. Zanotti (DESY)🇦🇺 · J. B. Zhang (CSSM, U. Adelaide)🇦🇺
First results from lattice QCD revealing the chiral nonanalytic behavior of nucleon and Delta 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 Delta magnetic moments is derived to next to next to leading nonanalytic order. Numerical simulation results for the proton and Delta 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.
* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.