Quantum coherence and ground-state phase transition in a four-chain Bose–Hubbard model |
Ji-Guo Wang,Lin-Qi Guo,Ya-Fei Song |
Figure 4. The quantum coherence C ($\bar{C}$) as a function of ε/tN with U/tN = 4, the long-range interactions V/tN = 0, 0.3, 1, 2, and 3 in (a)–(e), respectively. (f) Is the corresponding $\bar{C}$ as a function of Δ/tN. |