Quantum coherence and ground-state phase transition in a four-chain Bose–Hubbard model
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Quantum coherence and ground-state phase transition in a four-chain Bose–Hubbard model |
| Ji-Guo Wang,Lin-Qi Guo,Ya-Fei Song |
| Figure 7. Ground-state phase diagram for the regular four-chain BH model without disorder (Δ = 0) with the on-site interaction U = 1 for the different ratios β = t∥/t⊥ i.e., β = 1 in (a) and β = 0.05 in (b). The long-range interaction are V/U = 0, 1 and 3 in a(1)(b(1)), a(2)(b(2)) and a(3)(b(3)), respectively. |
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