The possibility of Kitaev ladders being SPT?

[JerryChen97]

It is very difficult to find the local order parameter indicating SSB in Kitaev ladders.
However, part of the features of SPT has been observed.
I am still not sure how to determine that something is an SPT, but some easy-to-check results can be presented here.

[JerryChen97]

The entanglement spetrum has a double degeneracy:
Parameters: Jx=1.75, Jy=0.25, Jz=1.0, chi_max=128, L=4, iDMRG. Note that L=4 here implies 8 spins in total.

[JerryChen97]

Two disorder parameter along the line Jx+Jy=2Jz

Considering the symmetry between x and y there is no need for the other half part.