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An Exact Solution with Exit in the New Inflationary Universe Model |
| WANG Wen-Fu |
| Department of Industrial Automation, Southwest Petroleum Institute, Nanchong 637001 |
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| Cite this article: |
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WANG Wen-Fu 2001 Chin. Phys. Lett. 18 997-999 |
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Abstract Taking the cosmological expansion rate directly as a function of the inflaton field instead of as a function of time, we present a new exact solution to Einstein's equations that describe the evolution of inflationary universe model. This includes a solution which has nearly exponential inflation for , and then develops smoothly towards radiation-like evolution for . The inflation is driven by the evolution of scalar field with inflation potential, V( ) = V0 - m2/2 + λ/4. The spectral index of the scalar density, ns, is computed and ns lies well inside the limits set by the cosmic background explorer satellite.
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98.80.Cq
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Published: 01 July 2001
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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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