Bosonization of 2+1 dimensional fermions on the surface of topological insulators
Andrea Cappelli,
Lorenzo Maffi,
Riccardo Villa
Abstract:Three-dimensional topological insulators can be described by an effective field theory involving two ‘hydrodynamic’ Abelian gauge fields. The action contains a bulk topological BF term and a surface term, called loop model. This describes the massless 2+1 dimensional excitations and provides them with a semiclassical, yet non-trivial conformal invariant dynamics. Given that topological insulators are originally fermionic, this physical setting is ideal for realizing the bosonization of massless fermions in ter… Show more
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