| 日時: |
2008-07-15 11:00 - 12:00 |
| 場所: |
研究本館２階２２０室 |
| 会議名: |
An Exceptional Algebraic Origin of the AdS/CFT Yangian Symmetry |
| 連絡先: |
津田 |
| 講演者: |
森山 翔文 (名古屋大学) |
| 講演言語: |
英語 |
| アブストラクト: |
In the su(2|2) spin chain motivated by the AdS/CFT correspondence, a novel symmetry extending the superalgebra su(2|2) into u(2|2) was found. We pursue the origin of this symmetry in the exceptional superalgebra d(2,1;ε), which recovers su(2|2) when the parameter ε is taken to zero. Especially, we rederive the Yangian symmetries of the AdS/CFT spin chain using the exceptional superalgebra and find that the ε-correction corresponds to the novel symmetry. Also, we reproduce the non-canonical classical r-matrix of the AdS/CFT spin chain expressed with this symmetry from the canonical one of the exceptional algebra.
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