Domain walls as probes of gravity

Gia Dvali, Gregory Gabadadze, Oriol Pujolàs, Rakibur Rahman

    Research output: Contribution to journalArticle

    Abstract

    We show that domain walls are probes that enable one to distinguish large-distance modified gravity from general relativity (GR) at short distances. For example, low-tension domain walls are stealth in modified gravity, while they do produce global gravitational effects in GR. We demonstrate this by finding exact solutions for various domain walls in the DGP model. A wall with tension lower than the fundamental Planck scale does not inflate and has no gravitational effects on a 4D observer, since its 4D tension is completely screened by gravity itself. We argue that this feature remains valid in a generic class of models of infrared modified gravity. As a byproduct, we obtain exact solutions for supermassive codimension-2 branes.

    Original languageEnglish (US)
    Article number124013
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume75
    Issue number12
    DOIs
    StatePublished - Jun 20 2007

    Fingerprint

    Modified Gravity
    Domain Wall
    domain wall
    Gravity
    Probe
    gravitation
    General Relativity
    gravitational effects
    probes
    Exact Solution
    relativity
    Branes
    Codimension
    Observer
    Infrared
    Valid
    Model
    Demonstrate

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Nuclear and High Energy Physics
    • Mathematical Physics

    Cite this

    Domain walls as probes of gravity. / Dvali, Gia; Gabadadze, Gregory; Pujolàs, Oriol; Rahman, Rakibur.

    In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 75, No. 12, 124013, 20.06.2007.

    Research output: Contribution to journalArticle

    Dvali, Gia ; Gabadadze, Gregory ; Pujolàs, Oriol ; Rahman, Rakibur. / Domain walls as probes of gravity. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2007 ; Vol. 75, No. 12.
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