Quantum extensions of bi-conformal scalar-tensor gravity: particles as spacetime resonances, the Bernoulli mechanism for gravity, and falsifiable predictions

A quantum completion of bi-conformal scalar-tensor gravity (ISPG) built on a single unifying hypothesis: *elementary particles are not objects placed in spacetime — they are localised resonant excitations of the scalar-metric medium itself*. From this identification gravity emerges through a Bernoulli-type mechanism — the kinetic energy density of particle resonances redistributes into a static pressure deficit of the medium, which is the Newtonian 1/r field — giving a concrete mechanical origin for gravitational attraction without extra dimensions, compactifications, string backgrounds, or UV fixed points. The same framework yields a set of independent, near-term falsifiable predictions across active experimental frontiers: - **Cosmological constant and dark energy.** A cosmological negative-feedback loop between resonance production and pressure depletion regulates the vacuum energy density dynamically to the observed value, resolving the 10¹²⁰ discrepancy without fine-tuning. The predicted source-driven phantom dark-energy equation of state — already compatible with the DESI DR2 3.1σ preference for evolving dark energy — is testable against Euclid and future DESI releases.- **Gravitational decoherence.** ~0.5 Hz decoherence for eV-scale photon pairs at 10 m separation, within reach of MAQRO and STE-QUEST; effectively instantaneous for macroscopic systems.- **Gravitational birefringence.** ~10⁻⁴ rad differential phase for gamma-rays near stellar-mass black holes from one-loop vacuum polarisation — detectable by AMEGO and e-ASTROGAM.- **Cosmological fine-structure variation.** Δα/α ~ 10⁻⁷–10⁻⁶ at z ~ 1–3, within the precision of ESPRESSO and ELT-ANDES.- **Lepton mass hierarchy.** A first-principles derivation of the Koide formula Q = 2/3 from the cavity spectrum of the exponential nonlinear coupling, reproducing Q to 0.009% and the τ/e mass ratio to 0.34%.- **Gravitationally-induced tunnelling.** Anisotropic quantum tunnelling enhanced toward gravitational sources — relevant to nuclear burning in white-dwarf interiors.- **Equivalence principle.** A rigorous *identity* between inertial and gravitational mass — proved as a mathematical consequence of the retarded scalar field of an accelerated oscillon, not postulated.- **Topology of matter.** Spin as vortex winding number, antimatter as opposite winding, and Pauli exclusion as a statement about vortex topology.- **Cosmological onset.** A singularity-free beginning via quantum nucleation of the first oscillons from the quiescent medium, resolving the horizon, flatness, and monopole problems without inflation.- **Quantum-exact strong equivalence principle.** Universality of the scalar sensitivity s = 1/2 at all loop orders via a shift-symmetry Ward identity, forbidding scalar dipole radiation in binary-pulsar systems to all orders. The central closed result is the microscopic gravity chain: oscillon → Bernoulli pressure deficit → zero-frequency source → exterior 1/r field, with perturbative control over the non-neutral deformations of the source. ## Keywords quantum gravity; emergent gravity; cosmological constant problem; dark energy; DESI; Euclid; gravitational decoherence; MAQRO; STE-QUEST; gravitational birefringence; AMEGO; fine-structure constant; ESPRESSO; Koide formula; lepton masses; strong equivalence principle; inflation alternatives; oscillons; scalar-tensor gravity ## Relevant to physicists working on Quantum gravity and emergent gravity, the cosmological constant problem, dark-energy phenomenology (DESI, Euclid), gravitational decoherence experiments, high-energy astrophysics with gamma-ray observatories, cosmological fine-structure variation, Standard-Model mass hierarchy and Koide-type relations, inflation alternatives, and the foundations of the equivalence principle.