Absence of topological degeneracy in the Hubbard model on honeycomb lattice

Author： Li Tao  

Publisher： Edp Sciences

E-ISSN： 1286-4854|93|3|37007-37007

ISSN： 0295-5075

Source： EPL (EUROPHYSICS LETTERS), Vol.93, Iss.3, 2011-02, pp. : 37007-37007

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