This paper derives the Starobinsky inflationary potential from a holographic tensor network, conditional on a single physical hypothesis. The boundary theory of the 4, 3, r model is SYK₆, whose low-energy dynamics is governed by the Schwarzian effective action with coefficient αS ≈ 0. 004 (Maldacena-Stanford). Under the hypothesis that the one-loop Schwarzian determinant lifts to a bulk R² correction via the standard JT gravity embedding, the corrected Einstein-Hilbert action has R² coefficient ξ ∝ (log χ) ² χ^2/3. For the observed de Sitter entropy, ξ is exponentially large, placing the model deep in the Starobinsky plateau regime. The conformal transformation to Einstein frame yields V (φ) = V₀ (1 − exp (−√ (2/3) φ/MPl) ) ² with predictions nₛ ≈ 0. 965, rT ≈ 0. 004, and αₛ ≈ −6 × 10⁻⁴ for 57 e-folds. The hypothesis follows standard holographic reasoning but has not been derived within the model; given the hypothesis, no free parameter enters the derivation chain. To our knowledge, this is the first derivation of a specific inflationary potential from a microscopic holographic boundary theory.
Alvaro Lozano Rodriguez (Fri,) studied this question.