Criticality on R'enyi Defects at (2+1) D O(3) Quantum Critical Points
This work numerically investigates how different ways of cutting entanglement in a (2+1)d O(3) quantum spin model lead to distinct universality classes for Rényi defects. It found that while ordinary and special cuts remain disordered, the extraordinary cut exhibits a phase transition based on the Rényi index, indicating it transitions from disordered to ordered behavior.