Abstract
We study the integrable boundaries and crosscaps of classical sigma models. We show that there exists a classical analog of the integrability condition and KT-relation of the boundary and crosscap states of quantum spin chains. We also classify the integrable crosscaps for various sigma models including examples which are relevant in the AdS/CFT correspondence at strong coupling.
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Gombor, T. Integrable crosscaps in classical sigma models. J. High Energ. Phys. 2023, 146 (2023). https://doi.org/10.1007/JHEP03(2023)146
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DOI: https://doi.org/10.1007/JHEP03(2023)146