Emergence of the Photon Sail from the Universal Ψ Lagrangian

This paper derives the coherent Photon Sail directly from the Universal six–pillarLagrangian L(6) . The derivation shows that radiation pressure is a particular case ofinformational momentum transfer when the field enters a stable phase–coherentconfiguration with an external electromagnetic field. The emergent thrust densityis predicted to exceed classical photon pressure by factors of 102–103, dependingon the coherence state. The work further establishes the ontological principle thatwithin the framework nothing is created: all physical configurations pre–existand are only revealed as stable informational domains of . A pathway for laboratoryrevelation is proposed using thin plasmonic films and coherent dual–beamillumination.