Nonstandard compactifications with mass gaps and Newton's law
Aug, 199919 pages
Published in:
- JHEP 10 (1999) 013
e-Print:
- hep-th/9908116 [hep-th]
Report number:
- CERN-TH-99-248
Citations per year
Abstract:
The four-dimensional Minkowski space-time is considered as a three-brane embedded in five dimensions, using solutions of five-dimensional supergravity. These backgrounds have a string theoretical interpretation in terms of D3-brane distributions. By studying linear fluctuations of the graviton we find a zero-mode representing the massless graviton in four-dimensional space-time. The novelty of our models is that the graviton spectrum has a genuine mass gap (independent of the position of the world-brane) above the zero-mode or it is discrete. Hence, an effective four-dimensional theory on a brane that includes the massless graviton mode is well defined. The gravitational force between point particles deviates from the Newton law by Yukawa-type corrections, which we compute explicitly. We show that the parameters of our solutions can be chosen such that these corrections lie within experimental bounds.- supergravity
- dimension: 5
- field equations: solution
- membrane model: p-brane
- p-brane: 3
- compactification
- mass: gap
- mass spectrum
- gravitation: correction
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