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Toy Model for Eternal Expanding Universe Driven by Quintessence |
| GAO Chang-Jun1,2;SHEN You-Gen1,2,3,4 |
| 1Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Shanghai United Center for Astrophysics, Shanghai 200234 |
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| Cite this article: |
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GAO Chang-Jun, SHEN You-Gen 2003 Chin. Phys. Lett. 20 1656-1658 |
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Abstract Recent observations of microwave background and type Ia supernovae (SNe Ia) suggest a space-flat and accelerated expansion Universe. On the other hand, observations of supernovae 1997ff reveal that the Universe has undergone a decelerating-accelerating process. Combining these two classes of observations, we present an eternal expanding Universe toy model driven by quintessence. In this picture, the Universe undergoes an endless sequence of accelerating-decelerating cycles.
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| Keywords:
98.80.Cq
11.27.+d
11.30.Fs
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Published: 01 September 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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11.27.+d
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(Extended classical solutions; cosmic strings, domain walls, texture)
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11.30.Fs
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(Global symmetries (e.g., baryon number, lepton number))
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