Perturbative quantum gravity is ultraviolet divergent and, as shown by 't Hooft and Veltman, non-renormalizable. A recent object-relative, Lorentz-invariant weighting of internal electromagnetic modes renders selected one-loop contributions of quantum electrodynamics finite without counterterms. Here that weighting is derived rather than postulated: causality defines a mode resonator bounded by the Hubble radius and re-defined in every inertial frame, and the self-gravitation of each mode quantum deforms its spectrum. Applied to linearized gravity, the graviton self-coupling reaches order unity at the Planck wave number, so that the mode content available to a loop is suppressed beyond it. Any suppression exceeding a threshold fixed by the diagram renders the one-loop integrals finite; no cutoff is imposed and no mode structure above the Planck scale need be derived. For pure gravity the same power counting extends to every loop order, and the leading suppression already meets the resulting condition for every topology with more than one vertex; a single class of single-vertex insertions is excluded. The Bianchi identity takes the role of the Ward identity at one loop, and the transformation between the resonators of two inertial frames is unitary. The same finite mode content yields a vacuum energy density of order H^2/G, of the observed sign and magnitude, from the Planck and causal infrared wave numbers alone. A contribution tracking the instantaneous expansion rate is an exact rescaling of the gravitational constant and is excluded by primordial nucleosynthesis, so the mode basis must be frozen in any inertial system; referring it to the stationary de Sitter horizon fixes the remaining coefficient to the geometric value 6/pi and makes a value for the energy density of gravitational vacuum fluctuations possible which can be interpreted as origin of the dark-energy effect.
Perturbative quantum gravity is ultraviolet divergent and, as shown by 't Hooft and Veltman, non-renormalizable. A recent object-relative, Lorentz-invariant weighting of internal electromagnetic modes renders selected one-loop contributions of quantum electrodynamics finite without counterterms. Here that weighting is derived rather than postulated: causality defines a mode resonator bounded by the Hubble radius and re-defined in every inertial frame, and the self-gravitation of each mode quantum deforms its spectrum. Applied to linearized gravity, the graviton self-coupling reaches order unity at the Planck wave number, so that the mode content available to a loop is suppressed beyond it. Any suppression exceeding a threshold fixed by the diagram renders the one-loop integrals finite; no cutoff is imposed and no mode structure above the Planck scale need be derived. For pure gravity the same power counting extends to every loop order, and the leading suppression already meets the resulting condition for every topology with more than one vertex; a single class of single-vertex insertions is excluded. The Bianchi identity takes the role of the Ward identity at one loop, and the transformation between the resonators of two inertial frames is unitary. The same finite mode content yields a vacuum energy density of order H^2/G, of the observed sign and magnitude, from the Planck and causal infrared wave numbers alone. A contribution tracking the instantaneous expansion rate is an exact rescaling of the gravitational constant and is excluded by primordial nucleosynthesis, so the mode basis must be frozen in any inertial system; referring it to the stationary de Sitter horizon fixes the remaining coefficient to the geometric value 6/pi and makes a value for the energy density of gravitational vacuum fluctuations possible which can be interpreted as origin of the dark-energy effect.
In previous works, I interpreted gravitational divergences — in both black hole singularities and quantum collapse scenarios — as limit behaviors of the classical description rather than physically realized infinities. The present paper gives this interpretation its full mathematical form. I apply the Operational Curvature Cutoff Principle (OCCP) to the gravitational self-energy integral of Penrose–Diósi collapse models, derive the maximum physically meaningful self-energy E_max = Gm²/(√π ℓ_P) from the structure of the limit process itself, and obtain a finite minimum collapse timescale τ_min = √π ℏ ℓ_P / (Gm²) > 0. The macroscopic Penrose predictions are recovered exactly. The divergence of E_grav is shown to be a limit behavior of the same kind as the Kretschmann divergence at black hole centers: a signal that the classical description has been formally extended beyond its operational domain, not a physically meaningful infinity. The central physical message is that gravity imposes a Planck-limited instability on quantum superpositions: the collapse timescale scales as τ_min ∝ 1/m², with a lower bound set by the Planck time. This work does not propose a new dynamical theory, but makes explicit what the limit-behavior interpretation requires of existing collapse models. Version history: v1: Initial submission v2: Extended with explicit Gaussian computation, mass scaling analysis (τ_min ∝ 1/m²), experimental predictions, decoherence comparison, and limitations section. v3: Four corrections and additions: (1) Fixed the d→0 limit: at d=0 the two configurations coincide and E_grav=0, as required physically. E_max is achieved in the d→∞ limit, not d→0. (2) Clarified that σ is the center-of-mass wave packet width, not the physical size R of the object. The OCCP cutoff operates at the level of the self-energy integral, not the object's geometry. (3) Showed explicitly that the OCCP cutoff is required at all length scales: even for R ≫ ℓ_P, the integral formally includes contributions from |x-y| < ℓ_P. In the macroscopic limit these contributions are negligible (not absent), and Penrose's predictions are recovered exactly. (4) Added the effective cutoff σ_eff = √(R² + ℓ_P²), which provides a single interpolating formula connecting the macroscopic τ ∝ m⁻¹ (Penrose) and Planck-scale τ ∝ m⁻² (OCCP) regimes. .
This work explores whether localized electromagnetic interactions can be modeled by a physically concluded object-relative ultraviolet weighting of photon modes. The proposal is motivated heuristically by a weak-field self-backreaction estimate for localized energy-carrying modes and by a three-dimensional overlap argument. In the resulting ansatz, the infrared sector remains unchanged up to a characteristic angular wavenumber k_c, while ultraviolet contributions are suppressed asymptotically by a factor of order k_c^3/k^3. The mode structure is object-relative: a real photon is weighted by its frequency u k in the rest frame of the interaction object with four-velocity u. The occupation of the modes and the amplitudes of the vacuum fluctuations, in contrast, follow the rules of special relativity, so that virtual photons in loops are weighted by the invariant k k, i.e. by the Euclidean photon momentum. The weighting applies to photon lines only; applied in the same way to the electron line, it conflicts with gauge invariance or with the measured running of the fine-structure constant. One-loop diagrams with internal photon lines become ultraviolet finite, and the weighting can be represented by a gauge-invariant kinetic term of the photon field, so that the Ward-Takahashi identities are preserved. Four test cases are discussed. A Bethe-type estimate of the Lamb shift places the characteristic scale near the electron Compton wavenumber. The anomalous magnetic moment and the relativistic part of the Lamb shift show, however, that a photon weighting at this scale requires additional structure on the electron line to remain compatible with high-precision measurements. This structure, the vacuum polarization, and the spectral consistency of the weighting define the tasks for future work.
We expand the Einstein--Hilbert action to cubic order about the Schwarzschild horizon, in the even Regge--Wheeler gauge of the Gaddam--Groenenboom--'t~Hooft near-horizon framework, and derive the cubic graviton self-interaction. Our central result is a vanishing theorem: at leading soft order the self-coupling of the purely traceless longitudinal polarizations is identically zero. This is a framework-specific statement: even RW gauge, GGV sector, leading soft order. The surviving interaction lives in the trace sector; its on-shell equal-ℓ weight W(λ,λ,λ)=−3λ(2λ2+λ+3)/(λ+1)2, follows from two independent derivations agreeing to machine precision. We simulate the resulting Hamiltonian at two complementary scales. On IBM Qiskit/Aer, with exact cross-checks, the hardware-format circuits confirm quantitatively what two structural facts already predict, a conserved charge that only the cubic vertex violates (opening φφ→hh→4φ) and a resonance-free boost spectrum (gap →1/2): the longitudinal channel is perturbatively rigid, and the simulation measures the residual dressing (deff=1.06; multiplicity far from thermal, Poisson, and Haar). A symmetry-graded matrix-product-state evolution then climbs the multipole ladder to sixty modes, the 120-qubit register, and settles the one question the multiplet cannot: on a late-time measure common to both engines the inelasticity converges to ηˉ∞≃0.16 (understated by the single multiplet), the dressing stays area-law with peak entanglement ≃0.45 nats far below the Page value, and the result is cutoff-converged and robust to 96 qubits at larger occupation. The rigidity therefore persists rather than scrambling as the register grows.
Levitated optomechanical systems are approaching the regime where macroscopic quantum superpositions become experimentally accessible. A central question is whether gravity itself, through its unavoidable coupling to material quantum fluctuations, imposes a fundamental decoherence channel on such superpositions. Starting from two independently well-tested physical elements—the quantum vacuum fluctuations of the material energy-momentum tensor, and the weak-field linear response kernel of classical general relativity—we derive a structurally rigid scaling law for the gravitational decoherence rate: \Gamma \propto G M^2 d^2 / (\hbar L^3) \cdot \Phi(l_*/L). The exponents and dependence on mass M, superposition separation d, and object size L are fixed entirely by dimensional analysis and the semiclassical field equations, without tunable parameters. The overall amplitude is set by a single phenomenological input—the ultraviolet cutoff scale l_* of the effective geometric noise. Identifying l_* with the Planck length yields \Phi \sim \mathcal{O}(1) and a decoherence rate of order 1\,\text{Hz} for nanoparticles with M \sim 10^{-14}\,\text{kg}, d \sim 10^{-7}\,\text{m}, and L \sim 10^{-6}\,\text{m}, placing the prediction within the foreseeable sensitivity window of next-generation levitated optomechanical setups. We provide explicit falsification conditions, a three-path staged verification strategy that does not require simultaneous optimisation of all parameters, and operational signatures—including a distinctive pure-dephasing channel without energy relaxation—that distinguish this mechanism from environmental noise, zero-temperature electromagnetic vacuum fluctuations, and the Diósi-Penrose model.
This paper proposes a physical origin for the de Broglie matter wave rooted in the indivisible completion of relational energy loops — the minimal stable structure required when reality is fundamentally relational and the quantum of action ℏ forbids infinite divisibility of processes. We argue that causally efficacious entities must form closed energy cycles to avoid free-end paradoxes and infinite-flight inconsistencies, with the smallest stable unit being one quantum of action (ℏ), manifesting as an intrinsic cycle. For massive particles, inertia arises from completed loops involving the Higgs background (via chiral handshakes for fermions). For massless particles like photons, the propagating loop itself constitutes the entity. Spin is reinterpreted as the number of loop completions per propagation step: half-cycle for fermions (spin 1/2), full cycle for photons (spin 1), and tensorial extensions for higher spins (e.g., graviton spin 2). Quantum phase tracks the instantaneous angle in the ongoing cycle, while the de Broglie frequency ω satisfies E = ℏω as the loop-completion rate. The de Broglie wave emerges as the spacetime-delocalized field of relational likelihoods — all points where an incoming energy loop can coherently complete in resonance with a detector — reconciling quantum indivisibility, relativistic causality, and interference without primitive wave–particle duality. Detection is all-or-nothing: partial loop closure is impossible, yielding either full identity (definite properties) or no event. Premature local closures produce dark matter candidates (gravitationally active but electromagnetically suppressed), while globally unresolved loops across cosmic scales contribute to dark energy via destructive interference and effective repulsion. The framework relies solely on relational ontology, action quantization, finite signal speed, and loop-closure necessity — deriving the de Broglie wave ontologically without empirical interference patterns, canonical quantization, or ad-hoc postulates. In Loop Meta-Theory (LMT), dark matter and dark energy unify as regimes of loop incompleteness.
We develop a quantum description of the resonant interaction between electromagnetic (EM) and gravitational waves (GW). We first show that Lorentz invariance together with polarization selection rules forbids any photon-graviton mixing in free space. We demonstrate that confining the EM field within a cavity quantum electrodynamics (cavity-QED) environment breaks translational symmetry and isotropy, leading to non-vanishing mode coupling between EM and gravitational degrees of freedom. Within this framework, we identify multiple photon-graviton scattering channels, including photon up- and down-conversion and photon creation. In the semiclassical limit of the trilinear interaction where GW acts as a classical pump and the EM field is in a vacuum, spontaneous parametric photon amplification and two-mode squeezing occur. When the gravitational field is quantized, however, the back-action and energy exchange between photons and gravitons result in saturation of amplification, in contrast to exponential growth, and the loss of purity in the photonic subsystem. The characteristic timescale scales as tsp∼(gng)−1, where g and ng refer to the coupling strength and the mean graviton number, demonstrating collective enhancement of the interaction with the graviton occupation number. In the stimulated regime, where one EM mode is initially populated, the effective coupling is further enhanced, analogous to Dicke-type superradiant emission. This work introduces a cavity-based graviton transducer for probing quantum aspects of GWs.