On the form factors of relevant operators and their cluster property

Acerbi, C; Mussardo, G; Valleriani, Angelo

doi:10.1088/0305-4470/30/9/007

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On the form factors of relevant operators and their cluster property

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Acerbi, C., Mussardo, G., & Valleriani, A. (1997). On the form factors of relevant operators and their cluster property. Journal of Physics A: Mathematical and General, 30(9), 2895-2913. doi:10.1088/0305-4470/30/9/007.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0028-51EB-8

Abstract

We compute the form factors of the relevant scaling operators in a class of integrable models without internal symmetries by exploiting their cluster properties. Their identification is established by computing the corresponding anomalous dimensions by means of the Delfino - Simonetti - Cardy sum rule and further confirmed it by comparing some universal ratios of the nearby non-integrable quantum field theories with their independent numerical determination.