Relation between boundary random-encoding viewpoint and bulk gravitational path integrals

Develop a precise connection between the boundary interpretation of a baby universe as logical qubits arising from pseudorandom encoding in holographic CFTs and bulk gravitational path-integral constructions that exhibit semiclassical baby-universe saddles.

Background

The paper proposes that pseudorandom dynamics in holographic CFTs lead to a random-encoding structure that naturally yields a baby-universe-like sector inaccessible to individual boundaries. This resolves certain puzzles via emergent complementarity.

While this boundary-centric, information-theoretic interpretation is compelling, the authors note that a concrete linkage to bulk gravitational path integrals is still lacking and requires further development.

References

How this viewpoint connects to bulk gravitational path integrals remains to be fully understood.

— Baby universe as logical qubits: information recovery in random encoding  (2511.20747 - Mori et al., 25 Nov 2025) in Section 6 (Outlook)

Establishing this interpretation also requires a globally consistent Lorentzian continuation of the booklet saddle which we leave open.

— Constructing and Probing Three-Boundary Booklet Geometries  (2609.37099 - Liu et al., 29 Sep 2026) in Section 2.4, “Candidate profiles” (discussion of the $AdS|AdS|BH$ branch)