Bypassing the Chiral Obstruction in Two-Dimensional Tensor Networks
Infinite Projected Entangled Pair States (PEPS) fail to describe gapped chiral phases due to spurious long-range correlations. This work introduces an auxiliary-assisted framework by embedding the physical system into an enlarged, non-chiral space using a time-reversed partner. This bypasses the obstruction, yielding a representation that recovers universal chiral information while eliminating artificial power-law correlations.