| Original Articles |
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Dark Energy Coupled with Relativistic Dark Matter in Accelerating Universe |
| ZHANG Yang |
| Astrophysics Center, University of Science and Technology of
China, Hefei 230026 |
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| Cite this article: |
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ZHANG Yang 2003 Chin. Phys. Lett. 20 1899-1902 |
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Abstract Recent observations favour an accelerating Universe dominated by the dark energy. We take the effective Yang-Mills condensate as the dark energy and couple it to a relativistic matter which is created by the decaying condensate. The dynamic evolution has asymptotic behaviour with finite constant energy densities, and the fractional densities ΩΛ ～ 0.7 for dark energy and Ωm ～ 0.3 for relativistic matter are achieved at proper values of the decay rate. The resulting expansion of the Universe is in the de Sitter acceleration.
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| Keywords:
98.80.Cq
98.80.Bp
04.20.Dw
04.62.+v
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Published: 01 October 2003
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| PACS: |
98.80.Cq
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(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
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98.80.Bp
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(Origin and formation of the Universe)
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04.20.Dw
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(Singularities and cosmic censorship)
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04.62.+v
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(Quantum fields in curved spacetime)
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