Black hole's 1/N hair

Gia Dvali, Cesar Gomez

    Research output: Contribution to journalArticle

    Abstract

    According to the standard view classically black holes carry no hair, whereas quantum hair is at best exponentially weak. We show that suppression of hair is an artifact of the semi-classical treatment and that in the quantum picture hair appears as an inverse mass-square effect. Such hair is predicted in the microscopic quantum description in which a black hole represents a self-sustained leaky Bose-condensate of N soft gravitons. In this picture the Hawking radiation is the quantum depletion of the condensate. Within this picture we show that quantum black hole physics is fully compatible with continuous global symmetries and that global hair appears with the strength B/. N, where B is the global charge swallowed by the black hole. For large charge this hair has dramatic effect on black hole dynamics. Our findings can have interesting astrophysical consequences, such as existence of black holes with large detectable baryonic and leptonic numbers.

    Original languageEnglish (US)
    Pages (from-to)419-423
    Number of pages5
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Volume719
    Issue number4-5
    DOIs
    Publication statusPublished - Feb 26 2013

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    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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