Coexistence of the Bandcount-Adding and Bandcount-Increment Scenarios

Figure 7

Analytically determined structure of the (𝑏,𝜇)-plane for 𝑎=0.23, 𝑏=−1.7⋯−1.4, 𝜇=0.5⋯1.8. The band-merging crisis curve 𝛾_inc intersects the periodic region 𝑃^𝑠_ℒℛ3. Between the two intersection points marked with 𝐴 and 𝐵, 𝑄¹ is adjacent to the periodic region. For values of 𝑏 smaller than 𝐴 or larger than 𝐵, 𝑄¹ is adjacent to 𝑄^inc instead.