Cosmology on a brane-induced gravity with a dilaton and trace anomaly

T. Torii, S. Mizuno, Keiichi Maeda

    Research output: Chapter in Book/Report/Conference proceedingChapter


    We present the effective equations to describe the four-dimensional gravity of a brane world, assuming that a five-dimensional bulk spacetime satisfies the Einstein equations and gravity is confined on the Z2 symmetric brane. Applying this formalism, we study the induced-gravity brane model first proposed by Dvali, Gabadadze and Porrati. In a generalization of their model, we show that an effective cosmological constant on the brane can be extremely reduced in contrast to the case of the Randall-Sundrum model even if a bulk cosmological constant and a brane tension are not fine-tuned. The detailed analysis can be seen in Refs. [1] and [3].

    Original languageEnglish
    Title of host publicationThe Tenth Marcel Grossmann Meeting: On Recent Developments in Theoretical and Experimental General Relativity, Gravitation and Relativistic Field Theories
    PublisherWorld Scientific Publishing Co.
    Number of pages2
    ISBN (Electronic)9789812704030
    ISBN (Print)9789812566676
    Publication statusPublished - 2006 Jan 1

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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