TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.17.4.110
TI  - On exactly solvable Yang-Baxter models and enhanced symmetries
PY  - 2024/10/10
UR  - https://scipost.org/SciPostPhys.17.4.110
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 17
IS  - 4
SP  - 110
A1  - Idiab, Khalil
AU  - van Tongeren, Stijn Jurrien
AB  - We study Yang-Baxter deformations of the flat space string that result in exactly solvable models, finding the Nappi-Witten model and its higher dimensional generalizations. We then consider the spectra of these models obtained by canonical quantization in light-cone gauge, and match them with an integrability-based Bethe Ansatz approach. By considering a generalized light-cone gauge we can describe the model by a nontrivially Drinfel'd twisted S matrix, explicitly verifying the twisted structure expected for such deformations. Next, the reformulation of the Nappi-Witten model as a Yang-Baxter deformation shows that Yang-Baxter models can have more symmetries than suggested by the $r$ matrix defining the deformation. We discuss these enhanced symmetries in more detail for some trivial and nontrivial examples. Finally, we observe that there are nonunimodular but Weyl-invariant Yang-Baxter models of a type not previously considered.
ER  -

@Article{10.21468/SciPostPhys.17.4.110,
	title={{On exactly solvable Yang-Baxter models and enhanced symmetries}},
	author={Khalil Idiab and Stijn Jurrien van Tongeren},
	journal={SciPost Phys.},
	volume={17},
	pages={110},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.17.4.110},
	url={https://scipost.org/10.21468/SciPostPhys.17.4.110},
}