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Posts by David Alfyorov

Nonlocal one-loop form factors of the spectral action with Standard Model content We compute the complete nonlocal one-loop form factors F₁(□/Λ²) and F₂(□/Λ², ξ) of the curvature-squared sector of the spectral action S = Tr f(D²/Λ²) for the full Standard Model particle content: 4 r...

Paper (open access): doi.org/10.5281/zenodo.19098042

Full repo (7 papers + code + proofs): github.com/davidichalfyorov-wq/sct-theory

#QuantumGravity #TheoreticalPhysics #OpenScience #Physics #Lean4 #FormalVerification #SpectralAction #hepth #grqc

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Verification: 4000+ automated tests, triple computer algebra (SymPy × GiNaC × mpmath at 100+ digits), 46 formally verified theorems in Lean 4, 8-layer pipeline. Every formula independently re-derived.

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This gives a concrete, testable prediction: a modified Newtonian potential V(r)/V_N = 1 − (4/3)e^{−m₂r} + (1/3)e^{−m₀r}, where V(0) = 0 (finite at the origin). Already constrained by solar system and lab measurements.

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The key result: the Weyl² coefficient α_C = 13/120 is completely fixed by the Standard Model particle content (4 scalars + 45 fermions + 12 gauge bosons). No tuning.

The form factors are entire functions → no ghost poles at one loop.

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New paper: "Nonlocal one-loop form factors of the spectral action with Standard Model content"

We compute the exact quantum corrections to gravity from all known particles — no new physics, no free parameters, no extra dimensions.

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#QuantumGravity #TheoreticalPhysics #OpenScience #Physics

2 weeks ago 0 0 1 0
Nonlocal one-loop form factors of the spectral action with Standard Model content We compute the complete nonlocal one-loop form factors F₁(□/Λ²) and F₂(□/Λ², ξ) of the curvature-squared sector of the spectral action S = Tr f(D²/Λ²) for the full Standard Model particle content: 4 r...

All papers open access:
📄 Form factors: doi.org/10.5281/zenodo.19098042
📄 Solar system tests: doi.org/10.5281/zenodo.19098100
📄 Weyl curvature bridge: doi.org/10.5281/zenodo.19354508
💻 Code: github.com/davidichalfyorov-wq/sct-theory

#OpenAccess #QuantumGravity #hepth #grqc

2 weeks ago 0 0 0 0

How seriously should you take this? We tried to break it:

• 4000+ automated tests
• Triple computer algebra cross-check (SymPy × GiNaC × mpmath, 100+ digit precision)
• 46 theorems formally verified in Lean 4
• Every form factor matched against 13+ independent papers

Codebase is open source.

2 weeks ago 0 0 1 0
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The effective masses m₂ ≈ 2.15Λ and m₀ ≈ 2.45Λ set the scale of deviations from Newton. Current torsion-balance and lunar laser ranging data give:

Λ > 2.6 meV (95% CL)

This is not a Planck-scale fantasy. It's a bound from real experiments, derivable from first principles.

2 weeks ago 0 0 1 0

The result: the total Weyl² coefficient is α_C = 13/120, coming from 4 scalars + 45 fermion d.o.f. + 12 gauge bosons.

This fixes the graviton propagator modification uniquely. The Newtonian potential becomes:

V(r)/V_N = 1 − (4/3)exp(−m₂r) + (1/3)exp(−m₀r)

Finite at r = 0. No singularity.

2 weeks ago 1 0 1 0

The one-loop effective action of gravity contains nonlocal form factors h_C(□) and h_R(□) that encode how quantum fields dress the gravitational propagator.

We computed these exactly for all SM spins (scalars, fermions, vectors) and summed them. No free parameters, just field counting.

2 weeks ago 1 0 1 0

Most quantum gravity frameworks predict nothing testable below the Planck scale.

We derived a parameter-free modification of Newton's potential from the Standard Model particle content alone.

Thread on what we found 👇
#QuantumGravity #TheoreticalPhysics #hepth #grqc

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