The Kitaev honeycomb model on surfaces of genus g ≥ 2

oleh: John Brennan, Jiří Vala

Format: Article
Diterbitkan: IOP Publishing 2018-01-01

Deskripsi

We present a construction of the Kitaev honeycomb lattice model on an arbitrary higher genus surface. We first generalize the exact solution of the model based on the Jordan–Wigner fermionization to a surface with genus g  = 2, and then use this as a basic module to extend the solution to lattices of arbitrary genus. We demonstrate our method by calculating the ground states of the model in both the Abelian doubled ${{\mathbb{Z}}}_{2}$ phase and the non-Abelian Ising topological phase on lattices with the genus up to g  = 6. We verify the expected ground state degeneracy of the system in both topological phases and further illuminate the role of fermionic parity in the Abelian phase.