Geometry-Conditioned Directional Coherence in YBaCuO. (GQR27)

High-temperature cuprate materials provide a structurally rich setting in which coherenttransport persists under strong thermal, structural, and vibrational noise. While extensive workhas focused on pairing mechanisms and energetic considerations, these approaches do not fullyexplain how directional coherent response can survive in a dynamically noisy lattice. Here weexamine the role of lattice geometry and constraint architecture in conditioning which coherentquantum modes remain dynamically admissible, using YBa2Cu3O7−δ as a concrete test case.Without modifying established quantum or condensed-matter theory, we show that geometricand boundary constraints act as admissibility filters that suppress competing decoherence chan-nels prior to statistical averaging. The results demonstrate geometry-conditioned directionalcoherence across structural variants and local perturbations, yielding a falsifiable predictionclass for structure–transport relationships. Superconducting systems represent one experimen-tally accessible limit of this more general organizational mechanism.