AuthorGreen, Kris H.
KeywordsPhysics, Astronomy and Astrophysics.
AdvisorCocke, William J.
MetadataShow full item record
PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractThis thesis derives and explores two solutions to the field equations of general relativity. These solutions are special cases of solutions already present in the literature. However, the present derivation is based on physical arguments which provides a basis for discussing the solutions as cosmological objects, rather than simply as a class of solutions with certain symmetries. This derivation naturally gives rise to the idea that the space-times indicated are generated by the passage of walls composed of gases of transcendant tachyons. After deriving the solutions, we explore the geodesics that these walls generate. In general, they tend to focus the paths of particles moving through the walls. It is also found that the walls generate blue-shifts in observed photons emitted from sources that pass through the walls. As applications of these solutions, numerical simulations demonstrate that a toy galaxy passing through the second type of tachyon wall develops spiral structures which persist for several rotations of the galaxy, dissolve, and then reform throughout the lifetime of the galaxy. A number of open problems associated with these walls are discussed.
Degree ProgramGraduate College