| Full text | |
| Author(s): |
Balachandran, A. P.
;
de Queiroz, A. R.
;
Saa, Alberto
;
Marmo, G
;
DeDiego, DM
;
Lecanda, MM
Total Authors: 6
|
| Document type: | Journal article |
| Source: | CLASSICAL AND QUANTUM PHYSICS: 60 YEARS ALBERTO IBORT FEST GEOMETRY, DYNAMICS, AND CONTROL; v. 229, p. 11-pg., 2019-01-01. |
| Abstract | |
We investigate the dynamics of scalar fields in the near-horizon exterior region of a Schwarzschild black hole. We show that low-energy modes are typically long-living and might be considered as being confined near the black hole horizon. Such dynamics are effectively governed by a Schrodinger operator with infinitely many self-adjoint extensions parameterized by U(1), a situation closely resembling the case of an ordinary free particle moving on a semiaxis. Even though these different self-adjoint extensions lead to equivalent scattering and thermal processes, a comparison with a simplified model suggests a physical prescription to chose the pertinent self-adjoint extensions. However, since all extensions are in principle physically equivalent, they might be considered in equal footing for statistical analyses of near-horizon modes around black holes. Analogous results hold for any non-extremal, spherically symmetric, asymptotically flat black hole. (AU) | |
| FAPESP's process: | 13/09357-9 - Physics and geometry of spacetime |
| Grantee: | Alberto Vazquez Saa |
| Support Opportunities: | Research Projects - Thematic Grants |