Dual description of η-deformed OSP sigma models (2020)
Journal Article
Alfimov, M., Feigin, B., Hoare, B., & Litvinov, A. (2020). Dual description of η-deformed OSP sigma models. Journal of High Energy Physics, 2020(12), Article 40. https://doi.org/10.1007/jhep12%282020%29040

We study the dual description of the η-deformed OSP(N|2m) sigma model in the asymptotically free regime (N > 2m + 2). Compared to the case of classical Lie groups, for supergroups there are inequivalent η-deformations corresponding to different choic... Read More about Dual description of η-deformed OSP sigma models.

Yang-Baxter deformations of the principal chiral model plus Wess-Zumino term (2020)
Journal Article
Hoare, B., & Lacroix, S. (2020). Yang-Baxter deformations of the principal chiral model plus Wess-Zumino term. Journal of Physics A: Mathematical and Theoretical, 53(50), Article 505401. https://doi.org/10.1088/1751-8121/abc43d

A large class of integrable deformations of the principal chiral model, known as the Yang–Baxter deformations, are governed by skew-symmetric R-matrices solving the (modified) classical Yang–Baxter equation. We carry out a systematic investigation of... Read More about Yang-Baxter deformations of the principal chiral model plus Wess-Zumino term.

Sigma models with local couplings: a new integrability-RG flow connection (2020)
Journal Article
Hoare, B., Levine, N., & Tseytlin, A. A. (2020). Sigma models with local couplings: a new integrability-RG flow connection. Journal of High Energy Physics, 2020(11), Article 20. https://doi.org/10.1007/jhep11%282020%29020

We consider several classes of σ-models (on groups and symmetric spaces, η-models, ⋋-models) with local couplings that may depend on the 2d coordinates, e.g. on time τ . We observe that (i) starting with a classically integrable 2d σ-model, (ii) form... Read More about Sigma models with local couplings: a new integrability-RG flow connection.