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

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

2004-08-30

arxiv.org/abs/hep-lat/0408044v1

J.Stat.Mech.0410:P10009,2004

Physics

High Energy Physics

High Energy Physics - Lattice

16 pages, 1 eps figure

Scientific paper

10.1088/1742-5468/2004/10/P10009

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.

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