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Non-integrable Quantum Field Theories as Perturbations of Certain Integrable Models

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arxiv hep-th/9603011 v1 pith:LUVMRAYC submitted 1996-03-04 hep-th cond-mat

G. Delfino , G. Mussardo , P. Simonetti This is my paper
classification hep-thcond-mat
keywords fieldintegrablemodelstheoriesmatrixmodelnon-integrableperturbations
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abstract

We approach the study of non--integrable models of two--dimensional quantum field theory as perturbations of the integrable ones. By exploiting the knowledge of the exact $S$-matrix and Form Factors of the integrable field theories we obtain the first order corrections to the mass ratios, the vacuum energy density and the $S$-matrix of the non-integrable theories. As interesting applications of the formalism, we study the scaling region of the Ising model in an external magnetic field at $T \sim T_c$ and the scaling region around the minimal model $M_{2,7}$. For these models, a remarkable agreement is observed between the theoretical predictions and the data extracted by a numerical diagonalization of their Hamiltonian.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 234 citations worldwide. Full citation record

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