Seminars & Lectures
| * TITLE | Hidden Yangian symmetry in squashed sigma model | ||||||
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| * HOST(Applicant) | |||||||
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| * DATE / TIME | 2011-03-16, 16:30~17:30 | ||||||
| * PLACE | 503 Conference room, APCTP, Pohang | ||||||
| * ABSTRACT | |||||||
| We discuss a hidden symmetry of a two-dimensional sigma model on a squashed S^3. The SU(2) current can be improved so that it can be regarded as a flat connection. Then we can obtain an infinite number of conserved non-local charges and show the Yangian algebra by directly checking the Serre relation. This symmetry is also deduced from the coset structure of the squashed sphere. The same argument is applicable to the case with the Wess-Zumino term. |
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