Non-standard compactifications with mass gaps and Newton's law

Details Non-standard compactifications with mass gaps and Newton's law Non-standard compactifications with mass gaps and Newton's law

1999-08-17

arxiv.org/abs/hep-th/9908116v2

JHEP 9910:013,1999

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, LaTeX2e, corrected some typos, to appear in JHEP

Scientific paper

10.1088/1126-6708/1999/10/013

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.

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