Classically integrable field theories with defects
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Some ideas and remarks are presented concerning a possible Lagrangian approach to the study of internal boundary conditions relating integrable fields at the junction of two domains. The main example given in the article concerns single real scalar fields in each domain and it is found that these may be free, of Liouville type, or of sinh-Gordon type.
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Cited by 2 Pith papers
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New soliton solutions for Chen-Lee-Liu and Burgers hierarchies and its B\"acklund transformations
New soliton solutions for Chen-Lee-Liu and Burgers hierarchies are derived via dressing methods on zero and non-zero vacua, classified by vertex operators, and extended by gauge-Bäcklund transformations.
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Fusion of Integrable Defects and the Defect $g$-Function
Derives additivity and fusion rules for defect g-functions in integrable 2D QFT, with effective amplitudes for non-topological cases and lowered entropy contribution in Ising non-topological fusion.
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