Unified State Field Theory: Mass–Energy–Information Conservation, the Entropic Tensor, and Quantum-Gravitational Foundations on a Causal-Set Substrate

We propose a Unified State Field Theory (USFT) constructed from a single foundational postulate: at every point in spacetime there exists a conserved scalar state density with units of energy per unit volume, whose volume integral over the universe is constant. The information density is realised as a complex scalar field with a Mexican-hat potential and is anchored to the Bekenstein bound. The framework reduces to general relativity in the local regime, generates flat rotation curves at galactic scales, produces cosmic acceleration in the slow-roll regime, and motivates a qualitative reinterpretation of the Hubble tension. A horizon-matching analysis provides a suggestive numerical bridge between the universal coupling and the Immirzi parameter of loop quantum gravity, motivating a value consistent with the Domagała–Lewandowski–Meissner isolated-horizon counting. The framework is tested on eight galaxies from the SPARC catalogue, achieving a 3.9% median velocity-residual RMS with the universal coupling fixed by the LQG calculation — no free parameters on the coupling. The kinematically required central informational amplitudes correlate with independently measured Spitzer photometric central surface densities at r = 0.87, with empirical exponent 0.45 ± 0.10. The ordinal parameter is identified with the sequential-growth index of a Sorkin–Rideout causal set; symmetry breaking via Coleman–Weinberg loop corrections is identified with cosmic inflation. Six falsifiable predictions are presented, testable with JWST, Euclid, CMB-S4, LISA, and high-precision atomic interferometry. Submitted to Physical Review D (under review)