Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-03-03
Phys.Rev.D75:104013,2007
Physics
High Energy Physics
High Energy Physics - Theory
20 pages, 7 figures; v2: references and comments added; v3: version published in Physical Review D
Scientific paper
10.1103/PhysRevD.75.104013
We study linearized gravity in a six-dimensional Einstein-Maxwell model of warped braneworlds, where the extra dimensions are compactified by a magnetic flux. It is difficult to construct a strict codimension two braneworld with matter sources other than pure tension. To overcome this problem we replace the codimension two defect by an extended brane, with one spatial dimension compactified on a Kaluza-Klein circle. Our background is composed of a warped, axisymmetric bulk and one or two branes. We find that weak gravity sourced by arbitrary matter on the brane(s) is described by a four-dimensional scalar-tensor theory. We show, however, that the scalar mode is suppressed at long distances and hence four-dimensional Einstein gravity is reproduced on the brane.
Kobayashi Tsutomu
Minamitsuji Masato
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