Notes on gauging noneffective group actions

T. Pantev; E. Sharpe

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arXiv · hep-th/0502027

Notes on gauging noneffective group actions

T. Pantev·E. Sharpe

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Abstract

In this paper we study sigma models in which a noneffective group action has been gauged. Such gauged sigma models turn out to be different from gauged sigma models in which an effectively-acting group is gauged, because of nonperturbative effects on the worldsheet. We concentrate on finite noneffectively-acting groups, though we also outline how analogous phenomena also happen in nonfinite noneffectively-acting groups. We find that understanding deformations along twisted sector moduli in these theories leads one to new presentations of CFT's, defined by fields valued in roots of unity.

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T. Pantev, E. Sharpe. 2005-06-07. Notes on gauging noneffective group actions. https://arxiv.org/abs/hep-th/0502027

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