TFPT scientific source excerpt Original repository path: documents/tfpt_research_contracts/sections/018-source.tex Original file SHA-256: f74b5983483b619cd06b701aa4aabfe0b979ce8581e4085556289991c9c55774 Inclusive original lines: 1-68 Line numbers below refer to the original source. This bounded excerpt is source evidence; it is not a new proof/checker run. Conversation metadata and personal execution details are omitted where indicated. 000001 | \section*{Research Contract --- \texttt{GRAV.SPIN2.EMERGENCE.01} (massless transversal spin-2 from the same spectral determinant)} 000002 | \addcontentsline{toc}{section}{Research Contract: GRAV.SPIN2.EMERGENCE.01} 000003 | % ===================================================================== 000004 | \noindent\emph{Typing.} A research contract \mO\ (ledger row \texttt{GRAV.SPIN2.EMERGENCE.01}), 000005 | registered 2026-08-28 from review wave~3. \textbf{Demand.} From the 000006 | \emph{same} spectral determinant that carries the gauge fixpoints, a massless transversal 000007 | spin-2 pole with two helicities, universal $T_{\mu\nu}$ coupling, diffeomorphism Ward identities, 000008 | and positive Hessian / reflection-positive transfer. \textbf{Relation.} The 000009 | entanglement-equilibrium Einstein equation (\vref{v358}/\vref{v359}) stays a 000010 | \emph{downstream / conditional} readout --- it presupposes a local QFT and can never be cited as 000011 | producing one; \texttt{GRAV.NONCIRCULAR.01} is \emph{binding} (BW/CHM uses remain 000012 | assumption-declared). \textbf{Kill tests.} A massive or longitudinal extra mode; non-universal 000013 | coupling; failed diffeomorphism Ward; negative Hessian / RP violation on the spin-2 sector. 000014 | Status: \texttt{GRAV.SPIN2.EMERGENCE.01} \mO. 000015 | 000016 | \par\smallskip\noindent\textbf{Executed update (2026-08-28, completeness wave): quadratic 000017 | witnesses, with the local truncation's ghost typed 000018 | (\veri{v997\_\allowbreak spin2\_\allowbreak smg\_\allowbreak witnesses.py}; the contract stays \mO).} 000019 | Exact Barnes--Rivers decomposition of the quadratic spectral action: $R{+}R^2$ is \emph{clean} 000020 | (one massless TT pole, two helicities, scalaron at $M_{\mathrm{scal}}$ exact). The local $a_4$ 000021 | Weyl$^2$ truncation \emph{necessarily} carries an opposite-residue spin-2 ghost --- typed. 000022 | The contract's content is pinned on the untruncated form factor $a(\Box)=e^{-\Box/M^2}$. 000023 | Einstein equation stays downstream/conditional; \texttt{GRAV.NONCIRCULAR.01} remains binding. 000024 | Display marker stays \mO. 000025 | 000026 | \par\smallskip\noindent\textbf{Executed update (2026-08-29, review wave 4): quadratic Hamiltonian 000027 | half executed 000028 | (\veri{v1000\_\allowbreak spin2\_\allowbreak sk\_\allowbreak witnesses.py}; the contract stays \mO).} 000029 | Positivity exact; $2$ TT helicities at all $5852$ nonzero momenta ($N=6..12$); 000030 | $\omega=|q|$ with $q_i=2\sin(k_i/2)$ and axis expansion $\omega=k-k^3/24$ exact. 000031 | Must-fail: a mass term gaps TT; a wrong-sign kinetic term yields two negative directions. 000032 | Spectral-action Hessian identification, nonlinear Ward and universal coupling stay \mO. 000033 | Display marker stays \mO. 000034 | 000035 | \par\smallskip\noindent\textbf{WAVE-6 firewall (2026-08-30): \texttt{GRAV.WEINBERG.WITTEN.01} 000036 | registered \mO; this contract's display stays \mO.} 000037 | The Weinberg--Witten theorem is the binding firewall \emph{before any spin-2 marker move}: 000038 | the microscopic Hamiltonian family must \emph{not} possess a fundamental Lorentz-covariant 000039 | local conserved $T_{\mu\nu}$; Lorentz symmetry, diffeomorphism Ward identities and the 000040 | spin-2 mode must emerge in the \emph{same} IR limit. Cross-link only (this row does not 000041 | list \texttt{GRAV.WEINBERG.WITTEN.01} as a dependency --- that would cycle). 000042 | 000043 | \par\smallskip\noindent\textbf{Executed update (2026-08-30, evening TOE-gate wave): interacting 000044 | TT half-step 000045 | (\veri{v1012\_\allowbreak toe\_\allowbreak gate\_\allowbreak witnesses.py}; the contract stays \mO).} 000046 | Conserved interaction-complete lattice stress $\sim10^{-15}$; TT spectral positivity exact; 000047 | sum rules $\sim10^{-15}$; the dominant positive-$Z$ pole persists under $\phi^4$ (gapped, as 000048 | expected for massive generic matter); $Z$ trend $k_1$ suppressed $0.958$ / $k_2$ enhanced $1.033$; 000049 | free-limit analytic match. Missing: TFPT content, $k\to0$ volume scaling, Ward identities. 000050 | Display marker stays \mO. 000051 | 000052 | \par\smallskip\noindent\textbf{Executed update (2026-09-05, round-3 integration): 000053 | gapped-parent/TT boundary 000054 | (\texttt{GRAV.PARENT.GAP.NO\_GO.01}; 000055 | \veri{v1024\_\allowbreak parent\_\allowbreak internal\_\allowbreak boundaries.py}; no parent 000056 | marker move).} 000057 | A uniform full-parent gap $\Delta>0$ excludes a massless pole with 000058 | $\omega(k_{\min})\to0$. Away from $k=0$ the symmetric-traceless target has five 000059 | pointwise components and the transverse-traceless projector has rank two, but its 000060 | direction-dependent $k\to0$ limit prevents an exact strictly finite-range direct TT 000061 | projector. A viable escape therefore requires a critical physical sequence together 000062 | with local tensor gauge constraints whose Ward identities generate the TT sector only 000063 | in the infrared. The finite representation count is not a derived TFPT stress 000064 | operator, and no massless pole, universal coupling, diffeomorphism Ward identity or 000065 | gravitational continuum theorem is constructed. \texttt{GRAV.SPIN2.EMERGENCE.01}, 000066 | T7 and TOE remain \mO. 000067 | 000068 | % =====================================================================