Abstract
Identifying the fundamental degrees of freedom of a black hole poses a long-standing puzzle. Recently 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.
Original language | American English |
---|---|
Pages (from-to) | 2617-2624 |
Number of pages | 8 |
Journal | International Journal of Modern Physics D |
Volume | 17 |
Issue number | 13-14 |
DOIs | |
State | Published - Dec 2008 |
Keywords
- Black holes
- Effective field theory