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arXiv · hep-th/0404199

From Defects to Boundaries

Z. Bajnok·A. George
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Abstract

In this paper we describe how relativistic field theories containing defects are equivalent to a class of boundary field theories. As a consequence previously derived results for boundaries can be directly applied to defects, these results include reduction formulas, the Coleman-Thun mechanism and Cutcosky rules. For integrable theories the defect crossing unitarity equation can be derived and defect operator found. For a generic purely transmitting impurity we use the boundary bootstrap method to obtain solutions of the defect Yang-Baxter equation. The groundstate energy on the strip with defects is also calculated.

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Z. Bajnok, A. George. 2005-01-11. From Defects to Boundaries. https://doi.org/10.1142/s0217751x06025262

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