**SMS scnews item created by John Enyang at Sun 9 Sep 2012 1453**

Type: Seminar

Distribution: World

Expiry: 15 Sep 2012

**Calendar1: 14 Sep 2012 1205-1255**

**CalLoc1: Carslaw 175**

Auth: enyang@penyang.pc (assumed)

### Algebra Seminar

# Symmetries of the squashed sigma models

### Matsumoto

###### Friday 14th September, 12:05--12:55pm, Carslaw 175

###### Speaker:

Takuya Matsumoto (University of Sydney)

###### Title:

Symmetries of the squashed sigma models

###### Abstract:

It is known that the Yangian and the quantum affine algebra are the
infinite dimensional algebras which belong to the rational and trigonometric type respectively.
In this talk, I will explain that these two different kinds of symmetries are simultaneously
realized in a certain two dimensional classical field theory with the target space squashed three sphere,
which is a one parameter deformation of the three sphere.

This is based on the collaboration work arXiv:1203.3400 and
arXiv:1201.3058 with Io Kawaguchi and Kentaroh Yoshida (Kyoto University).

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After the seminar we will take the speaker to lunch.

See the Algebra Seminar web page for information about other seminars in the series.

John Enyang John.Enyang@sydney.edu.au