منابع مشابه
Spacetime foam and high-energy photons
It is shown that high-energy astrophysics can provide information on the small-scale structure of spacetime.
متن کاملSpacetime Foam and Dark Energy
Due to quantum fluctuations, spacetime is foamy on small scales. The degree of foaminess is found to be consistent with the holographic principle. One way to detect spacetime foam is to look for halos in the images of distant quasars. Applying the holographic foam model to cosmology we "predict" that the cosmic energy density takes on the critical value; and basing only on existing archived dat...
متن کاملSpacetime Foam and Vacuum Energy
The term Spacetime Foam was introduced for the first time by J.A. Wheeler at the end of the fifties to indicate that quantum fluctuations come into play at the Planckian scale, changing topology and metric [1]. Apart the pioneering path integral approach to Spacetime Foam, considered by S.W. Hawking [2], only recently the subject has been widely reconsidered in the context of brane physics [3],...
متن کاملSpacetime Foam and the Casimir Energy
We conjecture that the neutral black hole pair production is related to the vacuum fluctuation of pure gravity via the Casimir-like energy. A generalization of this process to a multi-black hole pair is considered. Implications on the foam-like structure of spacetime and on the cosmological constant are discussed.
متن کاملSpacetime Foam
Spacetime is composed of a fluctuating arrangement of bubbles or loops called spacetime foam, or quantum foam. We use the holographic principle to deduce its structure, and show that the result is consistent with gedanken experiments involving spacetime measurements. We propose to use laserbased atom interferometry techniques to look for spacetime fluctuations. Our analysis makes it clear that ...
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ژورنال
عنوان ژورنال: New Astronomy Reviews
سال: 2010
ISSN: 1387-6473
DOI: 10.1016/j.newar.2010.09.011