Kerr-NUT-AdS metrics and string theory

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dc.contributor.advisor Pope , Christopher en_US
dc.contributor.committeeMember Fulling , Stephen en_US
dc.creator Chen , Wei en_US 2008 -10 -10T20 :53 :53Z 2014 -02 -19T19 :29 :17Z 2008 -10 -10T20 :53 :53Z 2014 -02 -19T19 :29 :17Z 2007 -12 en_US 2008 -10 -10T20 :53 :53Z
dc.identifier.uri http : / /hdl .handle .net /1969 .1 /85873
dc.description.abstract With the advent of supergravity and superstring theory , it is of great importance to study higher -dimensional solutions to the Einstein equations . In this dissertation , we study the higher dimensional Kerr -AdS metrics , and show how they admit further generalisations in which additional NUT -type parameters are introduced . The choice of coordinates in four dimensions that leads to the natural inclusion of a NUT parameter in the Kerr -AdS solution is rather well known . An important feature of this coordinate system is that the radial variable and the latitude variable are placed on a very symmetrical footing . The NUT generalisations of the highdimensional Kerr -AdS metrics obtained in this dissertation work in a very similar way . We first consider the Kerr -AdS metrics specialised to cohomogeneity 2 by appropriate restrictions on their rotation parameters . A latitude coordinate is introduced in such a way that it , and the radial variable , appeared in a very symmetrical way . The inclusion of a NUT charge is a natural result of this parametrisation . This procedure is then applied to the general D dimensional Kerr -AdS metrics with cohomogeneity [D /2] . The metrics depend on the radial coordinate r and [D /2] latitude variables ?i that are subject to the constraint Ei ?i ? = 1 . We find a coordinate reparameterisation in which the ?i variables are replaced by [D /2] - 1 unconstrained coordinates y ? , and put the coordinates r and y ? on a parallel footing in the metrics , leading to an immediate introduction of ([D /2] - 1 ) NUT parameters . This gives the most general Kerr -NUT -AdS metrics in D dimensions . We discuss some remarkable properties of the new Kerr -NUT -AdS metrics . We show that the Hamilton -Jacobi and Klein -Gordon equations are separable in Kerr - NUT -AdS metrics with cohomogeneity 2 . We also demonstrate that the general cohomogeneity -n Kerr -NUT -AdS metrics can be written in multi -Kerr -Schild form . Lastly , We study the BPS limits of the Kerr -NUT -AdS metrics . After Euclideanisation , we obtain new families of Einstein -Sassaki metrics in odd dimensions and Ricci -flat metrics in even dimensions . We also discuss their applications in String theory . en_US
dc.format.medium electronic en_US
dc.language.iso en _US en_US
dc.publisher Texas A &M University en_US
dc.subject Kerr -NUT -AdS en_US
dc.title Kerr -NUT -AdS metrics and string theory en_US
dc.type Book en
dc.type.genre Electronic Dissertation en_US
dc.type.material text en_US
dc.format.digitalOrigin born digital en_US


Kerr-NUT-AdS metrics and string theory. Available electronically from http : / /hdl .handle .net /1969 .1 /85873 .

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