ISSP/IPMU/KEK informal meeting on "theta=pi"

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discussion

Gapped or gapless, case of 2d CP^1 at theta=pi

Gapped or gapless, case of 4d SU(2) YM at theta=pi

mini introduction to the relation among spin systems, non-linear sigma models and the WZW model

Relation between 4d SU(2) YM and 2d CP^1 model

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1/25/23

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