Dual Superconformal Symmetry from AdS5 x S5 Superstring Integrability

Understand

We discuss 2d duality transformations in the classical AdS5 x S5 superstring and their effect on the integrable structure.

• T-duality along four directions in Poincare parametrization of AdS5 maps the bosonic part of the superstring action into itself.
• On bosonic level, this duality may be understood as a symmetry of the first-order (phase space) system of equations for the coset components of the current.
• The associated Lax connection is invariant modulo the action of an so(2,4)-automorphism.