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On quantum fluctuations and black holes


Yi, Piljin (1994) On quantum fluctuations and black holes. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/8jtc-0d19.


We explore some exotic phenomena in charged black holes, arising from the second quantization of matter fields or from the first quantization of fundamental strings. Spherically symmetric magnetic black holes admit special modes of electrically charged fermions, known as Callan-Rubakov modes, which can be quantized efficiently. We find that the chargeless sector generates non-thermal quantum radiations from extremal Reissner-NordstrOm black holes, thereby reducing the black hole masses below the familiar classical bound in spite of the vanishing Hawking temperature. On the other hand, the charged sector induces a vacuum energy distribution and the gravitational backreaction thereof, which are particularly pronounced for extremal dilatonic black holes. Implications of these quantum effects are studied in great detail. Also considered is a string-inspired two-dimensional gravity with non-singular charged black holes among its solutions. After a lengthy discussion on the stability of these novel space-times, we speculate on the possibility and implications of nonsingular black holes in full-blown string theories.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Preskill, John P.
Group:Caltech Theory
Thesis Committee:
  • Preskill, John P. (chair)
  • Schwarz, John H.
  • Trivedi, Sandip P.
Defense Date:20 April 1994
Record Number:CaltechETD:etd-09112008-135620
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3475
Deposited By: Imported from ETD-db
Deposited On:11 Sep 2008
Last Modified:16 Apr 2021 23:22

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