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Motivation World-Sheet SUSY Lie superalgebras From World-Sheet SUSY to Supertargets Outlook<br />
String theory on AdS 3 × S 3 × T 4<br />
• The procedure works for string theory on AdS 3 × S 3 × T 4<br />
• AdS 3 × S 3<br />
N = (2, 2) WZNW on SU(1, 1) × SU(2)<br />
• T 4<br />
N = (2, 2) WZNW on U(1) 4<br />
• String ghosts – can be seen as<br />
N = (2, 2) WZNW on U(1) 2<br />
• Divide into<br />
U(1, 1) × U(2) ↦→ U(1, 1|2)<br />
U(1) × U(1) ↦→ U(1|1)<br />
U(1) × U(1) ↦→ U(1|1)<br />
• String theory has total central charge zero