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Topological properties of single-particle states decaying into a continuum due to interaction
use the eigenstates of
Heff(ω, k) = H0(k) + (ω, k) (3a)
fulfilling the self-consistent eigenvalue equation
Heff(E , k)|u(E , k)〉 = E (k)|u(E , k)〉. (3b)
This is still a 2 × 2 problem for each k but with [...] Haldane model, the gap closes for the chosen param- eters t1 = t2 = 1, φ = π/2 at the K point if M = 3
√ 3. We
vary M keeping the other parameters fixed and determine MC
where the gap closes. Then, we determine [...] of Physics and Astronomy and Manitoba Quantum Institute, University of Manitoba, Winnipeg, Canada R3T 2N2
(Received 10 October 2023; revised 26 July 2024; accepted 16 October 2024; published 12 November …