Dark Energy from Conformal Self-Lensing at the T-Symmetric Cosmological Boundary
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| Format: | Recurso digital |
| Sprache: | Englisch |
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2026
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| _version_ | 1866901215757991936 |
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| author | Toupin, Daniel |
| author_facet | Toupin, Daniel |
| contents | <p>We derive the time-dependent dark energy equation of state from the T-symmetric cosmological boundary condition, without introducing any new fields, potentials, or degrees of freedom. Structure formation generates Weyl curvature in the bulk, violating the boundary constraint C=0 at a rate proportional to D'=Df. Conformal self-lensing of the boundary's enforcement response by accumulated structure gives an enhancement factor D, yielding total enforcement power P proportional to D^3*f^2.</p><p>The resulting dark energy density rho_DE = sigma_0 * D^3*f^2/a produces the equation of state w(a) = -2/3 - f - (2/3)*d(ln f)/d(ln a), with zero free shape parameters. A CPL fit gives w0=-0.43, wa=-1.66. Against DESI DR2 (w0=-0.42+/-0.21, wa=-1.75+/-0.58), the model achieves chi^2=0.02 compared to chi^2=11.2 for LCDM.</p><p>The model predicts phantom crossing at z=0.50, peak dark energy density at z=0.51, parameter-free locking of w(z) to the independently measurable growth rate f(z), and eventual disappearance of dark energy as structure growth freezes. The coincidence problem is dissolved: dark energy is strongest when and only when structure is forming. The cosmological constant problem is avoided: Lambda_bg=0 exactly from celestial holography, and the observed acceleration is a transient dissipative effect.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19781296 |
| institution | Zenodo |
| language | eng |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Dark Energy from Conformal Self-Lensing at the T-Symmetric Cosmological Boundary Toupin, Daniel dark energy T-symmetric cosmology DESI equation of state conformal self-lensing Weyl curvature structure formation phantom crossing CPL parametrisation celestial holography cosmological constant problem coincidence problem cosmological constant baryon acoustic oscillations w0wa parametrisation Shadow Framework holographic dark energy null infinity conformal symmetry late-time acceleration CMB <p>We derive the time-dependent dark energy equation of state from the T-symmetric cosmological boundary condition, without introducing any new fields, potentials, or degrees of freedom. Structure formation generates Weyl curvature in the bulk, violating the boundary constraint C=0 at a rate proportional to D'=Df. Conformal self-lensing of the boundary's enforcement response by accumulated structure gives an enhancement factor D, yielding total enforcement power P proportional to D^3*f^2.</p><p>The resulting dark energy density rho_DE = sigma_0 * D^3*f^2/a produces the equation of state w(a) = -2/3 - f - (2/3)*d(ln f)/d(ln a), with zero free shape parameters. A CPL fit gives w0=-0.43, wa=-1.66. Against DESI DR2 (w0=-0.42+/-0.21, wa=-1.75+/-0.58), the model achieves chi^2=0.02 compared to chi^2=11.2 for LCDM.</p><p>The model predicts phantom crossing at z=0.50, peak dark energy density at z=0.51, parameter-free locking of w(z) to the independently measurable growth rate f(z), and eventual disappearance of dark energy as structure growth freezes. The coincidence problem is dissolved: dark energy is strongest when and only when structure is forming. The cosmological constant problem is avoided: Lambda_bg=0 exactly from celestial holography, and the observed acceleration is a transient dissipative effect.</p> |
| title | Dark Energy from Conformal Self-Lensing at the T-Symmetric Cosmological Boundary |
| topic | dark energy T-symmetric cosmology DESI equation of state conformal self-lensing Weyl curvature structure formation phantom crossing CPL parametrisation celestial holography cosmological constant problem coincidence problem cosmological constant baryon acoustic oscillations w0wa parametrisation Shadow Framework holographic dark energy null infinity conformal symmetry late-time acceleration CMB |
| url | https://doi.org/10.5281/zenodo.19781296 |