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- W4328129851 abstract "Integrable λ-deformed σ-models are characterized by an underlying current algebra/coset model CFT deformed, at the infinitesimal level, by current/parafermion bilinears. We promote the deformation parameters to dynamical functions of time introduced as an extra coordinate. It is conceivable that by appropriately constraining them, the beta-functions vanish and consequently the σ-model stays conformal. Remarkably, we explicitly materialize this scenario in several cases having a single and even multiple deformation parameters. These generically obey a system of non-linear second-order ordinary differential equations. They are solved by the fixed points of the RG flow of the original σ-model. Moreover, by appropriately choosing initial conditions we may even interpolate between the RG fixed points as the time varies from the far past to the far future. Finally, we present an extension of our analysis to the Yang–Baxter deformed PCMs." @default.
- W4328129851 created "2023-03-22" @default.
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- W4328129851 date "2023-03-21" @default.
- W4328129851 modified "2023-09-26" @default.
- W4328129851 title "Dynamically restoring conformal invariance in (integrable) $sigma$-models" @default.
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- W4328129851 doi "https://doi.org/10.21468/scipostphys.14.3.043" @default.
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