Relevant literature and model-selection boundary

Chen, Qi, and Zhang analyze a SYK system coupled to Majorana chains. Their preparation is thermofield double, and their retrieval test uses a classical control bit ChenQiZhang. That is a relevant architecture, but not the initially pure, reference-entangled diary task adopted here.

Gaikwad, Kaushal, Mandal, and Wadia study a SYK source coupled to scalar fields, with a low-energy influence-functional description, partial-evaporation solutions, and horizonless solutions GaikwadEtAl. Their bath preparation, disorder averaging, couplings, and switching prescriptions are substantive parts of that model. In particular, their Model (b) uses a prescribed late-time reduction of the coupling to preserve the low-energy description. Their reconstruction of initial spin labels uses repeated experiments with different couplings. It is not identified here with single-run recovery of an arbitrary reference-entangled diary.

We therefore choose a regulated scalar-reservoir architecture, but do not import the geometry of GaikwadEtAl. The vacuum preparation and finite-band regulator below are explicit differences. A comparison with that paper would have to control these differences rather than suppress them in notation.

Pure Euclidean-filtered SYK states motivate the preparation KourkoulouMaldacena. The SYK low-energy reparametrization sector motivates a prospective nearly-${\mathrm{AdS}}_2$ description MaldacenaStanford. Neither result supplies a uniform gravitational dictionary for the inserted code defined below.

Recovery maps and gravitational reconstruction are already available in important settings NakayamaMiyataUgajin,PSSY. The JT-plus-bath analysis of Almheiri, Engelhardt, Marolf, and Maxfield also supplies an explicit evaporating gravitational setting AEMM. The missing claim in this manuscript is narrower: those results are not a certified channel correspondence for the microscopic preparation, interaction, packet access, and complete residual specified here.