Cosmological Models with Variable " Constants "
نویسنده
چکیده
The behavior of the ”constants”, G, c, h̄, a, e, mi and Λ, considering them as variable, in the framework of a flat cosmological model with FRW symmetries described by a bulk viscous fluid and considering mechanisms of adiabatic matter creation are investigated. Within two models; one with radiation predominance and another of matter predominance, this behavior are studied. We find that with the obtained solutions our model verifies these basic principles: Lorentz invariance and general covariance, Mach, Equivalence and causality. Finally to emphasize that the envisaged models are free from the main problem: Planck’s, horizon and entropy. With respect to model with matter predominance we see that in it cannot be considered mechanisms of creation of matter since if these are had incounts the temperature would increasein stead of staying constant while the universe is expanded. ∗E-mail: [email protected]
منابع مشابه
ar X iv : g r - qc / 9 90 70 03 v 1 1 J ul 1 99 9 Cosmological models with variable ” constants ”
The behavior of the ”constants”, G, c, h̄, a, e, mi and Λ, considering them as variable, in the framework of a flat cosmological model with FRW symmetries described by a bulk viscous fluid and considering mechanisms of adiabatic matter creation are investigated. Within two models; one with radiation predominance and another of matter predominance, this behavior are studied.
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