期刊
PHYSICS LETTERS B
卷 697, 期 3, 页码 251-253出版社
ELSEVIER
DOI: 10.1016/j.physletb.2011.01.063
关键词
Quantum gravity; Field theories on fractals
Despite their diversity, many of the most prominent candidate theories of quantum gravity share the property to be effectively lower-dimensional at small scales. In particular, dimension two plays a fundamental role in the finiteness of these models of Nature. Thus motivated, we entertain the idea that spacetime is a multifractal with integer dimension 4 at large scales, while it is two-dimensional in the ultraviolet. Consequences for particle physics, gravity and cosmology are discussed. (C) 2011 Elsevier B.V. All rights reserved.
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