Correlation Functions in the Two-dimensional Ising Model in a Magnetic Field at $T=T_c$

Abstract

The one and two-particle form factors of the energy operator in the two-dimensional Ising model in a magnetic field at $T=T_c$ are exactly computed within the form factor bootstrap approach. Together with the matrix elements of the magnetisation operator already computed in ref.\,\cite{immf}, they are used to write down the large distance expansion for the correlators of the two relevant fields of the model.

18 pages, latex, 7 tables

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• On the Operator Content of the Sinh-Gordon Model
• The Spin-Spin Correlation Function in the Two-Dimensional Ising Model in a Magnetic Field at $T=T_c$
• Universal Properties of Self-Avoiding Walks from Two-Dimensional Field Theory
• Stress-Energy Tensor and Ultraviolet Behaviour in Massive Integrable Quantum Field Theories
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