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From Defects to Boundaries

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arxiv hep-th/0404199 v3 pith:CWUJUF4J submitted 2004-04-26 hep-th

From Defects to Boundaries

classification hep-th
keywords defectsdefecttheoriesboundariesboundaryderivedequationfield
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Boundary bound states and integrable Wilson loops in ABJM

    hep-th 2026-02 conditional novelty 6.0

    Boundary Yangian symmetry fixes a two-parameter family of integrable reflection matrices for SU(1|2) boundaries with a degree of freedom, realized in ABJM Wilson loops as a boundary bound state.

  2. Radial Mirror Scattering and the QNM Convergence Region

    gr-qc 2026-06 unverdicted novelty 5.0

    A reflection about a distinguished point in the tortoise coordinate maps the Regge-Wheeler problem to a mirror version with the same QNM spectrum and provides an image interpretation of the lightcone distance controll...

  3. Fusion of Integrable Defects and the Defect $g$-Function

    hep-th 2026-05 unverdicted novelty 5.0

    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.