منابع مشابه
Quantum Gravity as a Metaphysical Problem
Quantum gravity is usually represented as being one of the central open problems of modern fundamental physics. It is presented as being “a dream, a theoretical need and a scientific goal. It is a theory which still does not exist in complete form”, a “yet-to-be-found theory” [1]. The starting point of this paper is that such a non-existence claim is wrong: There exists a simple and straightfor...
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We address the problem of finding a system in which there would be measurable quantum gravitational effects. Following standard quantum-field methods, we have calculated the first-order radiative correction of graviton exchange on the binding energy of an electron with an ultra cold superfluid droplet of He with mass about the Planck mass. For two He droplets with a mass difference of about one...
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Many theoretical approaches to quantum gravity predict the breakdown of Lorentz symmetry at Planck energies. Kinematical cosmic-ray studies are a sensitive tool in the search for such effects. This talk discusses the construction of test dispersion relations for such analyses.
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This is an introduction to the group field theory approach to quantum gravity, with emphasis on motivations and basic formalism, more than on recent results; we elaborate on the various ingredients, both conceptual and formal, of the approach, giving some examples, and we discuss some perspectives of future developments.
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ژورنال
عنوان ژورنال: Physics & Astronomy International Journal
سال: 2017
ISSN: 2576-4543
DOI: 10.15406/paij.2017.01.00029