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arXiv · 0804.0187

The Delocalized Effective Degrees of Freedom of a Black Hole at Low Frequencies

Barak Kol
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Abstract

Identifying the fundamental degrees of freedom of a black hole poses a long-standing puzzle. In hep-th/0511133 Goldberger and Rothstein forwarded a theory of the low frequency degrees of freedom within the effective field theory approach, where they are relevancy-ordered but of unclear physical origin. Here these degrees of freedom are identified with near-horizon but non-compact gravitational perturbations which are decomposed into delocalized multipoles. Their world-line (kinetic) action is determined within the classical effective field theory (CLEFT) approach and their interactions are discussed. The case of the long-wavelength scattering of a scalar wave off a Schwarzschild black hole is treated in some detail, interpreting within the CLEFT approach the equality of the leading absorption cross section with the horizon area.

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Barak Kol. 2008-05-19. The Delocalized Effective Degrees of Freedom of a Black Hole at Low Frequencies. https://doi.org/10.1007/s10714-008-0673-x

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