The enhancon mechanism is a specific phenomenon in string theory which resolves a certain naked spacetime singularity arising in the supergravity description related to N = 2 supersymmetric pure gauge theory. After reviewing the problem of singularities in general relativity as well as in string theory, and discussing the prototypical enhancon example constructed by wrapping D6-branes on a K3 surface, the thesis presents three generalisations to this static spherically symmetric case pertaining to large N SU{N) gauge theory. First we will use orientifolds to show how the enhancon mechanism also works in similar situations related to SO(2N + 1), USp(2N) and SO{2N) gauge theories. Second we will wrap D-brane distributions on K3 to obtain the enhancon in oblate, toroidal and prolate shapes. Third we will study a rotating enhancon configuration and consider its implications for the black hole entropy and the second law of thermodynamics.
Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:247587 |
Date | January 2002 |
Creators | Järv, Laur |
Publisher | Durham University |
Source Sets | Ethos UK |
Detected Language | English |
Type | Electronic Thesis or Dissertation |
Source | http://etheses.dur.ac.uk/3981/ |
Page generated in 0.0021 seconds