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表現論セミナー Cluster structures on spinor helicity and momentum twistor varieties(Jianrong Li氏)

2025年729日 開催

開催日時

2025年7月29日 16時00分 ~ 2025年7月29日 17時30分

場所

理学部3-205

講演者

Jianrong Li氏 (Universität Wien)
We study cluster structures on spinor helicity and momentum twistor varieties
which describe the kinematic spaces of massless scattering. Both varieties are
certain partial flag varieties. We exhibit embeddings of the corresponding cluster algebras
into cluster algebras of sufficiently large Grassmannians and show how the former
is obtained by freezing certain cluster variables from the latter. This is joint work with Lara Bossinger.
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