Domain Bubbles of Extra Dimensions

Details Domain Bubbles of Extra Dimensions Domain Bubbles of Extra Dimensions

2002-11-19

arxiv.org/abs/hep-th/0211175v1

Phys.Rev. D67 (2003) 025005

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, no figures; to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.67.025005

``Dimension bubbles'' of the type previously studied by Blau and Guendelman [S.K. Blau and E.I. Guendelman, Phys. Rev. D40, 1909 (1989)], which effectively enclose a region of 5d spacetime and are surrounded by a region of 4d spacetime, can arise in a 5d theory with a compact extra dimension that is dimensionally reduced to give an effective 4d theory. These bubbles with thin domain walls can be stabilized against total collapse in a rather natural way by a scalar field which, as in the case with ``ordinary'' nontopological solitons, traps light scalar particles inside the bubble.

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