Cosmological compactification in Kaluza-Klein model and time-dependent cosmological term |
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Authors: | S K Srivastava |
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Institution: | (1) Department of Mathematics, North Eastern Hill University, Bijni Campus, Bhagyakul, 793003 Shillong, India |
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Abstract: | Einstein's equations for the generalized (4+D)-dimensional Robertson-Walker model are solved taking the conformally invariant action for the matter field. Compactification of this model is discussed and the compactification time/compactification mass scale for different values ofD is calculated. The resulting 4-dimensional action for gravity is obtained. It is found that a time-dependent cosmological constant is induced which is very large when the cosmic time is small and very small when the cosmic time is large. |
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