Dynamical abelian anyons with bound states and scattering statesWe introduce a family of quantum spin Hamiltonians on $\mathbb{Z}^2$ that can
be regarded as perturbations of Kitaev's abelian quantum double models that
preserve the gauge and duality symmetries of these models. We analyze in detail
the sector with one electric charge and one magnetic flux and show that the
spectrum in this sector consists of both bound states and scattering states of
abelian anyons. Concretely, we have defined a family of lattice models in which
abelian anyons arise naturally as finite-size quasi-particles with non-trivial
dynamics that consist of a charge-flux pair. In particular, the anyons exhibit
a non-trivial holonomy with a quantized phase, consistent with the gauge and
duality symmetries of the Hamiltonian.
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