Note on four-particle form factors of operators $T_{2n}{T}_{-2n}$ in sinh-Gordon model

Abstract

The diagonal matrix elements $⟨{\theta }_1,{\theta }_2|T_{2n}{T}_{-2n}|{\theta }_1,{\theta }_2⟩$ between two-particle states in the sinh-Gordon model are computed analytically for all integers $n>0$. This confirms the proposal by F. Smirnov and A. Zamolodchikov for these matrix elements and demonstrates effectiveness of the algebraic approach to form factors.

7 pages; v2: a reference added; v3: minor stylistic corrections, two references added

References in corpus (4)

• Form factors in sinh- and sine-Gordon models, deformed Virasoro algebra, Macdonald polynomials and resonance identities
• On form factors and Macdonald polynomials
• Form factors of descendant operators: Resonance identities in the sinh-Gordon model
• Form factors of descendant operators: Reduction to perturbed $M(2,2s+1)$ models

Cited by in corpus (1)

• Scattering matrix for current-current deformations of the (2,2s+1) RSOS models