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Speaker |
Darabi, Farhad |
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Talk Title |
An accelerating universe in a 5D non compact and non Ricci flat Kaluza-Klein Cosmology |
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Abstract |
In the framework of noncompact Kaluza-Klein theory, we investigate a $(4+1)$-dimensional universe consisting of a $(4+1)$ dimensional Robertson-Walker type metric subject to a $(4+1)$ dimensional energy-momentum tensor. The matter part consists of an energy density together with a pressure subject to 4D part of the $(4+1)$ dimensional energy-momentum tensor. The dark part consists of a dark pressure $\bar{p}$ corresponding to the extra-dimension endowed by a scalar field. The reduced field equations subject to suitable equations of state for matter and dark parts may reveal inflationary behavior at early universe, deceleration for radiation dominant era and then acceleration for matter dominant era. |
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Talk view |
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