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Motivation World-Sheet SUSY Lie superalgebras From World-Sheet SUSY to Supertargets Outlook<br />
• N = (1, 1) for all λ, k<br />
Decoupling the fermions<br />
• Enhanced affine symmetry at the WZNW point<br />
λ 2 = 8π<br />
k<br />
• WZNW model is “rigid”: Fermions decouple<br />
• {t a } basis for g<br />
• Redefine ψ ↦→ χ<br />
χ = χ a t a ,<br />
¯χ = ¯χ a t a<br />
G = exp(iθχ) g exp(−i ¯θ ¯χ)<br />
S N =(1,1)<br />
WZNW [G] = S′ WZNW [g] + 1 ∫<br />
2π<br />
d 2 z (χ, ¯∂χ) + (¯χ, ∂ ¯χ)
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