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- W3122510296 abstract "We present and study a 4d Chern-Simons (CS) model whose gauge symmetry is encoded in a balanced Lie group crossed module. Using the derived formal set-up recently found, the model can be formulated in a way that in many respects closely parallels that of the familiar 3d CS one. In spite of these formal resemblance, the gauge invariance properties of the 4d CS model differ considerably. The 4d CS action is fully gauge invariant if the underlying base 4fold has no boundary. When it does, the action is gauge variant, the gauge variation being a boundary term. If certain boundary conditions are imposed on the gauge fields and gauge transformations, level quantization can then occur. In the canonical formulation of the theory, it is found that, depending again on boundary conditions, the 4d CS model is characterized by surface charges obeying a non trivial Poisson bracket algebra. This is a higher counterpart of the familiar WZNW current algebra arising in the 3d model. 4d CS theory thus exhibits rich holographic properties. The covariant Schroedinger quantization of the 4d CS model is performed. A preliminary analysis of 4d CS edge field theory is also provided. The toric and Abelian projected models are described in some detail." @default.
- W3122510296 created "2021-02-01" @default.
- W3122510296 creator A5036795881 @default.
- W3122510296 date "2021-06-03" @default.
- W3122510296 modified "2023-09-27" @default.
- W3122510296 title "4-d Chern-Simons theory: higher gauge symmetry and holographic aspects" @default.
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- W3122510296 doi "https://doi.org/10.1007/jhep06(2021)025" @default.
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