منابع مشابه
Einstein-Brans-Dicke Cosmology
We studied the Einstein-Brans-Dicke cosmology in detail. The difference of the evolution of the universe is significant between Einstein-Brans-Dicke cosmology and standard big-bang model during the radiation-dominated era. The power-law evolution of the scale factor is fast enough to solve the cosmological puzzles and slow enough to avoid the graceful exit problem. However, the constraints from...
متن کاملHolographic Bound in Brans-Dicke Cosmology
We apply the holographic principle to the Brans-Dicke cosmology. We analyze the holographic bound in both the Jordan and Einstein frames. The holographic bound is satisfied for both the k = 0 and k = −1 universe, but it is violated for the k = 1 matter dominated universe. 04.50.+h, 98.80.Hw Typeset using REVTEX 1
متن کاملOn Holography in Brans-Dicke Cosmology∗
The holographic bound in Brans-Dicke k = 1 matter dominated Cosmology is discussed. In this talk, both the apparent horizon and the particle horizon are taken for the holographic bound. The covariant entropy conjecture proposed by Bousso is also discussed.
متن کاملThird Quantization of Brans-Dicke Cosmology
We study the third quantization of a Brans-Dicke toy model, we calculate the number density of the universes created from nothing and found that it has a Planckian form. Also, we calculated the uncertainty relation for this model by means of functional Schrödinger equation and we found that fluctuations of the third-quantized universe field tends to a finite limit in the course of cosmic expans...
متن کاملCosmology in Brans-Dicke theory with a scalar potential
We consider the general behaviour of cosmologies in Brans-Dicke theory where the dilaton is self-interacting via a potential V (Φ). We show that the general radiation universe is a two-dimensional dynamical system whereas the dust or false vacuum universe is threedimensional. This is in contrast to the non-interacting dilaton which has uniformly a two-dimensional phase space. We find the phase ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2010
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.81.027301