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Oscillating Quintom Model with Time Periodic Varying Deceleration Parameter |
| SHEN Ming1**, ZHAO Liang2 |
1College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350108
2Department of Mathematics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
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| Cite this article: |
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SHEN Ming, ZHAO Liang 2014 Chin. Phys. Lett. 31 010401 |
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Abstract We propose a new law for the deceleration parameter that varies periodically with time. According to the law, we give a model of the oscillating universe with quintom matter in the framework of a 4-dimensional Friedmann–Robertson–Walker background. We find that, in the model, the Hubble parameter oscillates and keeps positive. The universe undergoes decelerating expansion and accelerating expansion alternately without singularity.
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Received: 17 September 2013
Published: 28 January 2014
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| PACS: |
04.20.Jb
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(Exact solutions)
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02.30.Hq
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(Ordinary differential equations)
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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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