Tensor Network Representations for Intrinsically Mixed-State Topological Orders
The method develops a general protocol to create fixed-point tensor network representations for intrinsically mixed-state topological phases that lack simple pure-state counterparts. This approach uses 'anyon condensation in Choi states' to handle decoherence from Abelian channels, allowing the construction of tensor networks for various topological orders and extending the technique to more complex systems.