Tue·Aug 31, 2004Tuesday·August 31, 2004

1. 01*

   Amplitude ratios for the mass spectrum of the 2d Ising model in the high-T, H \neq 0 phase

   M. Caselle🇮🇹 · P. Grinza🇮🇹 · A. Rago🇮🇹

   We study the behaviour of the 2d Ising model in the symmetric high temperature phase in presence of a small magnetic perturbation. We successfully compare the quantum field theory predictions for the shift in the mass spectrum of the theory with a set of high precision transfer matrix results. Our results rule out a prediction for the same quantity obtained some years ago with strong coupling methods.

   hep-latcond-mat.stat-mechhep-thJ.Stat.Mech.(2004)·5 citations
2. 02*

   Cutoff effects in meson spectral functions

   T. Blum🇺🇸 · P. Petreczky🇺🇸

   We study the lattice spacing dependence of meson spectral functions calculated in quenched QCD with domain wall fermions as well as clover Wilson fermions in quenched and partially-quenched QCD. We conclude that for lattice spacing $a\le 3$ GeV all excited states appearing in the spectral functions are lattice artifacts.

   hep-latNucl.Phys.B Proc.Suppl.(2005)·6 citations

* 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.