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Yangian symmetry in sigma model on squashed sphere 理研 101217 川口 維男京大理 IK Kentaroh Yoshida arXiv10080776 IK Domenico Orlando Kentaroh Yoshida in preparation ID: 410127

string symmetric background ads symmetric string ads background squashed coset

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Slide1

Hidden Yangian symmetry in sigma model on squashed sphere

@理研 ’10/12/17

川口 維男(京大理)

I.K.

Kentaroh

Yoshida, arXiv:1008.0776

I.K.

Domenico

Orlando,

Kentaroh

Yoshida, in preparation

に基づくSlide2

AdS/CFT対応の検証

symmetric coset

上のシグマ模型無限次元対称性

AdS

5

×S

5

上のtype ⅡB super string

4次元N=4super Yang-Mills

等価

可積分性が重要

可解スピン鎖模型

string background

になるものの分類

古典可積分系

Zarembo

‘10Slide3

AdS/CFTの拡張

non symmetric coset上のシグマ模型

AdS/NRCFTなど

無限次元対称性の存在?

s

quashed S

3

上のシグマ模型が無限次元対称性を持つことを示した

string backgroundになるsymmetric coset

全て

AdS

×(internal manifold)

の形

non-symmetric cosetへの拡張

一方でSlide4

本講演では

symmetric cosetの際の無限次元対称性の構成法

squashed S3

(warped AdS

3

)

上のシグマ模型

における無限次元対称性の構成string backgroundへの

格上げへ向けて①