1999/11/30 by M. Caselle, M. Hasenbusch · 5 citations
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Random Matrices and Applications #Theoretical and Computational Physics #cond-mat.stat-mech #hep-lat #hep-th
paper · pdf · doi:10.1016/s0550-3213(00)00074-2
published as Nucl.Phys.B579:667-703,2000 · Final version, minor changes in the text, 52 pages
arxiv created 2000/01/25 · openalex publication_date 2000/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
We compute the spectrum and several critical amplitudes of the two dimensional Ising model in a magnetic field with the transfer matrix method. The three lightest masses and their overlaps with the spin and the energy operators are computed on lattices of a width up to L=21. In extracting the continuum results we also take into account the corrections to scaling due to irrelevant operators. In contrast with previous Monte Carlo simulations our final results are in perfect agreement with the predictions of S-matrix and conformal field theory. We also obtain the amplitudes of some of the subleading corrections, for which no S-matrix prediction has yet been obtained.