Black Hole Emission in String Theory and the String Phase of Black Holes
| dc.creator | Sanchez, N. | |
| dc.date | 2001-06-25 | |
| dc.date | 2001-07-04 | |
| dc.date.accessioned | 2026-07-07T04:11:53Z | |
| dc.date.available | 2026-07-07T04:11:53Z | |
| dc.description | String theory properly describes black-hole evaporation. The quantum string emission by Black Holes is computed. The black-hole temperature is the Hawking temperature in the semiclassical quantum field theory (QFT) regime and becomes the intrinsic string temperature, T_s, in the quantum (last stage) string regime. The QFT-Hawking temperature T_H is upper bounded by the string temperature T_S. The black hole emission spectrum is an incomplete gamma function of (T_H - T_S). For T_H << T_S, it yields the QFT-Hawking emission. For T_H \to T_S, it shows highly massive string states dominate the emission and undergo a typical string phase transition to a microscopic `minimal' black hole of mass M_{\min} or radius r_{\min} (inversely proportional to T_S) and string temperature T_S. The string back reaction effect (selfconsistent black hole solution of the semiclassical Einstein equations) is computed. Both, the QFT and string black hole regimes are well defined and bounded.The string `minimal' black hole has a life time tau_{min} simeq (k_B c)/(G hbar [T_S]^3). The semiclassical QFT black hole (of mass M and temperature T_H) and the string black hole (of mass M_{min} and temperature T_S) are mapped one into another by a `Dual' transform which links classical/QFT and quantum string regimes. | |
| dc.description | LaTex, 22 pages, Lectures delivered at the Chalonge School, Nato ASI: Phase Transitions in the Early Universe: Theory and Observations. To appear in the Proceedings, Editors H. J. de Vega, I. Khalatnikov, N. Sanchez. (Kluwer Pub) | |
| dc.identifier | https://arxiv.org/abs/hep-th/0106221 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0106221 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/50762 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Black Hole Emission in String Theory and the String Phase of Black Holes | |
| dc.type | text |