GRAVITATIONAL ENERGY AND COSMIC ACCELERATION
نویسندگان
چکیده
منابع مشابه
Gravitational energy and cosmic acceleration
Cosmic acceleration is explained quantitatively, as an apparent effect due to gravitational energy differences that arise in the decoupling of bound systems from the global expansion of the universe. “Dark energy” is a misidentification of those aspects of gravitational energy which by virtue of the equivalence principle cannot be localised, namely gradients in the energy due to the expansion o...
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A web of interlocking observations has established that the expansion of the Universe is speeding up and not slowing, revealing the presence of some form of repulsive gravity. Within the context of general relativity the cause of cosmic acceleration is a highly elastic (p " #!), very smooth form of energy called ‘‘dark energy’’ accounting for about 75% of the Universe. The ‘‘simplest’’ explanat...
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The discovery ten years ago that the expansion of the Universe is accelerating put in place the present cosmological model, in which the Universe is composed of 4% baryons, 20% dark matter, and 76% dark energy. Yet the underlying cause of cosmic acceleration remains a mystery: it could arise from the repulsive gravity of dark energy – for example, the quantum energy of the vacuum – or it may si...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics D
سال: 2008
ISSN: 0218-2718,1793-6594
DOI: 10.1142/s0218271808012383