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- W3135976145 endingPage "115451" @default.
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- W3135976145 abstract "We formulate $lambda$-deformed $sigma$-models as QFTs in the upper-half plane. For different boundary conditions we compute correlation functions of currents and primary operators, exactly in the deformation parameter $lambda$ and for large values of the level $k$ of the underlying WZW model. To perform our computations we use either conformal perturbation theory in association with Cardy's doubling trick, as well as meromorphicity arguments and a non-perturbative symmetry in the parameter space $(lambda,k)$, or standard QFT techniques based on the free field expansion of the $sigma$-model action, with the free fields obeying appropriate boundary conditions. Both methods have their own advantages yielding consistent and rich, compared to those in the absence of a boundary, complementary results. We pay particular attention, albeit not exclusively, to integrability preserving boundary conditions." @default.
- W3135976145 created "2021-03-29" @default.
- W3135976145 creator A5026463976 @default.
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- W3135976145 date "2021-07-01" @default.
- W3135976145 modified "2023-09-24" @default.
- W3135976145 title "λ-Deformations in the upper-half plane" @default.
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- W3135976145 doi "https://doi.org/10.1016/j.nuclphysb.2021.115451" @default.
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