Tree-level S-matrix of Pohlmeyer reduced form of AdS_5 x S^5 superstring theory

Understand

With a motivation to find a 2-d Lorentz-invariant solution of the AdS_5 x S^5 superstring we continue the study of the Pohlmeyer-reduced form of this theory.

• The reduced theory is constructed from currents of the superstring sigma model and is classically equivalent to it.
• Its action is that of G/H=Sp(2,2)xSp(4)/SU(2)^4 gauged WZW model deformed by an integrable potential and coupled to fermions.
• This theory is UV finite and is conjectured to be related to the superstring theory also at the quantum level.