What Does It Mean for 1D RFIM to Be Frustrated?

[Hermite]

I've read in an article that the 1D Ising Model in a random field is a frustrated system. But what does it mean for the 1D RFIM to be frustrated?

The internet is very unhelpful. I'd appreciate it if someone could answer this for me.

Thanks.

 

[Lonewolf]

Frustration usually means that there is an infinite degeneracy of the classical ground state. The random field effectively turns the system into that of a spin glass, where the interactions between spins will become effectively random. A spin glass has lots and lots of degenerate states, so I guess this is where the frustration comes in.