dorsal/arxiv
View SchemaA Dust Universe Solution to the Dark Energy Problem
| Authors | James G. Gilson |
|---|---|
| Categories | |
| ArXiv ID | physics/0512166 |
| URL | https://arxiv.org/abs/physics/0512166 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
Astronomical measurements of the Omegas for mass density, cosmological constant lambda and curvature k are shown to be sufficient to produce a unique and detailed cosmological model describing dark energy influences based on the Friedman equations. The equation of state Pressure turns out to be identically zero at all epochs as a result of the theory. The partial omega, for dark energy, has the exact value, minus unity, as a result of the theory and is in exact agreement with the astronomer's measured value. Thus this measurement is redundant as it does not contribute to the construction of the theory for this model. Rather, the value of this omega is predicted from the theory. The model has the characteristic of changing from deceleration to acceleration at exactly half the epoch time at which the input measurements are taken. This is a mysterious feature of the model for which no explanation has so far been found. An attractive feature of the model is that the acceleration change time occurs at a red shift of approximately 0.8 as predicted by the dark energy workers. Using a new definition of dark energy density it is shown that the contribution of this density to the acceleration process is via a negative value for the gravitational constant, -G, exactly on a par with gravitational mass which occurs via the usual positive value for G. This paper also contains an appendix on dark energy dynamics with its own abstract.
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"abstract": "Astronomical measurements of the Omegas for mass density, cosmological\nconstant lambda and curvature k are shown to be sufficient to produce a unique\nand detailed cosmological model describing dark energy influences based on the\nFriedman equations. The equation of state Pressure turns out to be identically\nzero at all epochs as a result of the theory. The partial omega, for dark\nenergy, has the exact value, minus unity, as a result of the theory and is in\nexact agreement with the astronomer\u0027s measured value. Thus this measurement is\nredundant as it does not contribute to the construction of the theory for this\nmodel. Rather, the value of this omega is predicted from the theory. The model\nhas the characteristic of changing from deceleration to acceleration at exactly\nhalf the epoch time at which the input measurements are taken. This is a\nmysterious feature of the model for which no explanation has so far been found.\nAn attractive feature of the model is that the acceleration change time occurs\nat a red shift of approximately 0.8 as predicted by the dark energy workers.\nUsing a new definition of dark energy density it is shown that the contribution\nof this density to the acceleration process is via a negative value for the\ngravitational constant, -G, exactly on a par with gravitational mass which\noccurs via the usual positive value for G. This paper also contains an appendix\non dark energy dynamics with its own abstract.",
"arxiv_id": "physics/0512166",
"authors": [
"James G. Gilson"
],
"categories": [
"physics.gen-ph"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "A Dust Universe Solution to the Dark Energy Problem",
"url": "https://arxiv.org/abs/physics/0512166"
},
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