Universal entanglement signatures of foliated fracton phases

Understand

Fracton models exhibit a variety of exotic properties and lie beyond the conventional framework of gapped topological order.

• In a previous work, we generalized the notion of gapped phase to one of foliated fracton phase by allowing the addition of layers of gapped two-dimensional resources in the adiabatic evolution between gapped three-dimensional models.
• Moreover, we showed that the X-cube model is a fixed point of one such phase.
• In this paper, according to this definition, we look for universal properties of such phases which remain invariant throughout the entire phase.