Publication: Topological phase transitions and universality in the Haldane-Hubbard model
Topological phase transitions and universality in the Haldane-Hubbard model
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Giuliani, A., Jauslin, I., Mastropietro, V., & Porta, M. (2016). Topological phase transitions and universality in the Haldane-Hubbard model. Physical Review B, 94(20), online. https://doi.org/10.1103/PhysRevB.94.205139
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We study the Haldane-Hubbard model by exact renormalization group techniques. We analytically construct the topological phase diagram, for weak interactions. We predict that many-body interactions induce a shift of the transition line: in particular, repulsive interactions enlarge the topologically nontrivial region. The presence of new intermediate phases, absent in the noninteracting case, is rigorously excluded at weak coupling. Despite the nontrivial renormalization of the wave function and of the Fermi velocity, the conductivity
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- Giuliani, Alessandro
- Jauslin, Ian
- Mastropietro, Vieri
- Porta, Marcello
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Giuliani, A., Jauslin, I., Mastropietro, V., & Porta, M. (2016). Topological phase transitions and universality in the Haldane-Hubbard model. Physical Review B, 94(20), online. https://doi.org/10.1103/PhysRevB.94.205139
