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| Main Author: | |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2504.20283 |
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| _version_ | 1866916719161769984 |
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| author | Singh, Aman |
| author_facet | Singh, Aman |
| contents | We propose a cosmological model in which the expansion of the universe is driven by a Hawking-like influx of energy across the cosmological horizon, rather than from a fixed cosmological constant. In place of a cosmological constant, we introduce source terms in the Friedmann and continuity equations that couple horizon curvature to matter and radiation densities. At high curvature (large Hubble parameter $H$), this influx strongly replenishes matter and radiation, slowing their adiabatic dilution. As curvature diminishes, the influx weakens, smoothly transitioning into standard radiation- or matter-dominated eras. This mechanism naturally suppresses spatial curvature without requiring an inflationary phase. It may also produce near-scale-invariant fluctuations via slowly varying horizon thermodynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_20283 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Horizon-Driven Expansion from Hawking-Like Radiation: A Curvature-Coupled Cosmological Model Singh, Aman General Relativity and Quantum Cosmology High Energy Physics - Theory We propose a cosmological model in which the expansion of the universe is driven by a Hawking-like influx of energy across the cosmological horizon, rather than from a fixed cosmological constant. In place of a cosmological constant, we introduce source terms in the Friedmann and continuity equations that couple horizon curvature to matter and radiation densities. At high curvature (large Hubble parameter $H$), this influx strongly replenishes matter and radiation, slowing their adiabatic dilution. As curvature diminishes, the influx weakens, smoothly transitioning into standard radiation- or matter-dominated eras. This mechanism naturally suppresses spatial curvature without requiring an inflationary phase. It may also produce near-scale-invariant fluctuations via slowly varying horizon thermodynamics. |
| title | Horizon-Driven Expansion from Hawking-Like Radiation: A Curvature-Coupled Cosmological Model |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2504.20283 |