Breather boundary form factors in sine-Gordon theory

Abstract

A previously conjectured set of exact form factors of boundary exponential operators in the sinh-Gordon model is tested against numerical results from boundary truncated conformal space approach in boundary sine-Gordon theory, related by analytic continuation to sinh-Gordon model. We find that the numerical data strongly support the validity of the form factors themselves; however, we also report a discrepancy in the case of diagonal matrix elements, which remains unresolved for the time being.

LaTeX2e file, 23 pages, 10 eps figures

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Cited by in corpus (9)

• Non-perturbative methodologies for low-dimensional strongly-correlated systems: From non-abelian bosonization to truncated spectrum methods
• Branch Point Twist Field Form Factors in the sine-Gordon Model II: Composite Twist Fields and Symmetry Resolved Entanglement
• Sine-Gordon multi-soliton form factors in finite volume
• Branch Point Twist Field Form Factors in the sine-Gordon Model I: Breather Fusion and Entanglement Dynamics
• Regularization of multi-soliton form factors in sine-Gordon model
• On form factors of boundary changing operators
• TCSA and the finite volume boundary state
• Explicit boundary form factors: the scaling Lee-Yang model
• Boundary Quantum Field Theories Perturbed by $\mathrm{T}\bar{\mathrm{T}}$: Towards a Form Factor Program