Evolution of the disorder parameter

[JerryChen97]

Since up to now I still haven't found any clue on possible local order parameter yet, I looked into the evolution of the expectation of disorder parameters.

Here is a diagram along the line Jx + Jy = 2, Jz = 1, starting from Jx=1 to Jx = 2.

[JerryChen97]

I got a feeling that this curve was something super familiar and common but just could not come up with the explicit formula...

[JerryChen97]