Abstract
The absorption of photons and fermions into four-dimensional black holes is described by equations which in certain cases can be analyzed using dyadic index techniques. The resulting absorption cross sections for near-external black holes have a form at low energies suggestive of the effective string model. A coupling to the effective string is proposed for spin-0 and spin-[Formula presented][Formula presented] fields of pure [Formula presented] supergravity which respects the unbroken supersymmetry of extreme black holes and correctly predicts dilaton, axion, and fermion cross sections up to an overall normalization.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 7854-7868 |
| Number of pages | 15 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 56 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1997 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)