Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 12, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP12(2021)004
Keywords
Chern-Simons Theories; Integrable Field Theories; Bosonic Strings; Sigma Models
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In this paper, the classical exchange algebra of a lambda deformed string sigma model in a symmetric space is derived within the Hamiltonian formalism directly from a 4d holomorphic Chern-Simons theory. The explicit forms of the extended Lax connection and R-matrix in the Maillet bracket of the lambda model are explained based on a symmetry principle. This approach, based on a gauge theory, may offer a mechanism for addressing the non-ultralocality typically found in integrable string theories propagating in coset spaces.
We derive, within the Hamiltonian formalism, the classical exchange algebra of a lambda deformed string sigma model in a symmetric space directly from a 4d holomorphic Chern-Simons theory. The explicit forms of the extended Lax connection and R-matrix entering the Maillet bracket of the lambda model are explained from a symmetry principle. This approach, based on a gauge theory, may provide a mechanism for taming the non-ultralocality that afflicts most of the integrable string theories propagating in coset spaces.
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