Figure 3From: Finding critical states of enhanced memory capacity in attractive cold bosonsBogoliubov energy (rescaled by the inverse particle number) for \(\lambda =3.5\) as a function of x and θ. The red surface is the region where \(\Delta _{3}=\pi \) minimizes the energy and in the orange surface, \(\Delta _{3}=0\) is preferred. We observe two disconnected, degenerate minima, one for \(x=0\) (green point) and one for \(x\neq 0\) (blue point)Back to article page