Integrable Deformations from Twistor Space
| Autor: | Cole, Lewis T., Cullinan, Ryan A., Hoare, Ben, Liniado, Joaquin, Thompson, Daniel C. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | SciPost Phys. 17, 008 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.21468/SciPostPhys.17.1.008 |
| Popis: | Integrable field theories in two dimensions are known to originate as defect theories of 4d Chern-Simons and as symmetry reductions of the 4d anti-self-dual Yang-Mills equations. Based on ideas of Costello, it has been proposed in work of Bittleston and Skinner that these two approaches can be unified starting from holomorphic Chern-Simons in 6 dimensions. We provide the first complete description of this diamond of integrable theories for a family of deformed sigma models, going beyond the Dirichlet boundary conditions that have been considered thus far. Starting from 6d holomorphic Chern-Simons theory on twistor space with a particular meromorphic 3-form $\Omega$, we construct the defect theory to find a novel 4d integrable field theory, whose equations of motion can be recast as the 4d anti-self-dual Yang-Mills equations. Symmetry reducing, we find a multi-parameter 2d integrable model, which specialises to the $\lambda$-deformation at a certain point in parameter space. The same model is recovered by first symmetry reducing, to give 4d Chern-Simons with generalised boundary conditions, and then constructing the defect theory. Comment: 38 pages, 1 figure |
| Databáze: | arXiv |
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