A note on entanglement edge modes in Chern Simons theory

  • Gabriel WongEmail author
Open Access
Regular Article - Theoretical Physics


We elaborate on the extended Hilbert space factorization of Chern Simons theory and show how this arises naturally from a proper regularization of the entangling surface in the Euclidean path integral. The regularization amounts to stretching the entangling surface into a co-dimension one surface which hosts edge modes of the Chern Simons theory when quantized on a spatial subregion. The factorized state is a regularized Ishibashi state and reproduces the well known topological entanglement entropies. We illustrate how the same factorization arises from the gluing of two spatial subregions via the entangling product defined by Donnelly and Freidel [1].


Chern-Simons Theories Conformal Field Theory Topological Field Theories Topological Strings 


Open Access

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Copyright information

© The Author(s) 2018

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of VirginiaCharlottesvilleU.S.A.
  2. 2.Perimeter Institute for Theoretical PhysicsWaterlooCanada

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