Topological effects in our brane world from extra dimensions

G. Dvali, Ian I. Kogan, M. Shifman

    Research output: Contribution to journalArticlepeer-review


    The theories in which our world presents a domain wall (brane) embedded in large extra dimensions predict new types of topological defects. These defects arise due to the fact that the brane on which we live spontaneously breaks isometries of the extra space giving mass to some graviphotons. In many cases the corresponding vacuum manifold has nontrivial homotopies - this gives rise to topologically stable defects in four dimensions, such as cosmic strings and monopoles that carry gravimagnetic flux. The core structure of these defects is somewhat peculiar. Because of the fact that the translation invariance in the extra direction(s) is restored in their core, they act as "windows" to the extra dimensions. We also discuss the corresponding analogue of the Alice strings. Encircling such an object one would get transported onto a parallel brane.

    Original languageEnglish (US)
    Article number106001
    Pages (from-to)1-8
    Number of pages8
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number10
    StatePublished - Nov 15 2000

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics


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