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Durham e-Theses
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The enhancon mechanism in string theory

Järv, Laur (2002) The enhancon mechanism in string theory. Doctoral thesis, Durham University.



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. [brace not closed]

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Thesis Date:2002
Copyright:Copyright of this thesis is held by the author
Deposited On:01 Aug 2012 11:34

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