Decaying cosmological parameter in the early universe from NKK theory of gravity |
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| Affiliation: | Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata and Consejo Nacional de Ciencia y Tecnología (CONICET), Funes 3350, 7600 Mar del Plata, Argentina |
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| Abstract: | Using a formalism recently introduced we study the decaying of the cosmological parameter during the early evolution of an universe, whose evolution is governed by a vacuum equation of state. We use a stochastic approach in a nonperturbative treatment of the inflaton field from a Noncompact Kaluza–Klein (NKK) theory, to study the evolution of energy density fluctuations in the early universe. |
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