Kaluza-Klein monopole in AdS spacetime

Download
2003-09-15
Onemli, VK
Tekin, Bayram
We construct analogues of the flat space Kaluza-Klein (KK) monopoles in locally anti-de Sitter (AdS) spaces for Dgreater than or equal to5+1. We show that, unlike the flat space KK monopole, there is no five-dimensional static KK monopole in AdS spacetime that smoothly reduces to the flat space one as the cosmological constant goes to zero. Thus, one needs at least two extra dimensions, one of which is compact, to get a static KK monopole in cosmological backgrounds.
PHYSICAL REVIEW D

Suggestions

Shortcuts to high symmetry solutions in gravitational theories
Deser, S; Tekin, Bayram (IOP Publishing, 2003-11-21)
We apply the Weyl method, as sanctioned by Palais' symmetric criticality theorems, to obtain those-highly symmetric-geometries amenable to explicit solution, in generic gravitational models and dimension. The technique consists of judiciously violating the rules of variational principles by inserting highly symmetric, and seemingly gauge fixed, metrics into the action, then varying it directly to arrive at a small number of transparent, indexless, field equations. Illustrations include spherically and axial...
Matching words and pictures
Barnard, K; Duygulu, P; Forsyth, D; de Freitas, N; Blei, DM; Jordan, MI (Test accounts, 2003-08-15)
We present a new approach for modeling multi-modal data sets, focusing on the specific case of segmented images with associated text. Learning the joint distribution of image regions and words has many applications. We consider in detail predicting words associated with whole images (auto-annotation) and corresponding to particular image regions (region naming). Auto-annotation might help organize and access large collections of images. Region naming is a model of object recognition as a process of translat...
Godel-type metrics in various dimensions: II. Inclusion of a dilaton field
Gurses, M; Sarıoğlu, Bahtiyar Özgür (IOP Publishing, 2005-11-21)
This is the continuation of an earlier work where Godel-type metrics were defined and used for producing new solutions in various dimensions. Here, a simplifying technical assumption is relaxed which, among other things, basically amounts to introducing a dilaton field to the models considered. It is explicitly shown that the conformally transformed Godel-type metrics can be used in solving a rather general class of Einstein-Maxwell-dilaton-3-form field theories in D >= 6 dimensions. All field equations can...
Massive, topologically massive, models
Deser, S; Tekin, Bayram (IOP Publishing, 2002-06-07)
In three dimensions, there are two distinct mass-generating mechanisms for gauge fields: adding the usual Proca/Pauli-Fierz, or the more esoteric Chern-Simons (CS), terms. Here, we analyse the three-term models where both types are present and their-various limits. Surprisingly, in the tensor case, these seemingly innocuous systems are physically unacceptable. If the sign of the Einstein term is 'wrong', as is in fact required in the CS theory, then the excitation masses are always complex; with the usual s...
Drinfeld twist and general relativity with fuzzy spaces
Kürkcüoğlu, Seçkin (IOP Publishing, 2007-01-21)
We give a simplified formula for the star product on CPLn, which enables us to define a twist element suited for discussing a Drinfeld twist like structure on fuzzy complex projective spaces. The existence of such a twist will have several consequences for field theories on fuzzy spaces, some of which we discuss in the present paper. As expected, we find that the twist of the coproduct is trivial for the generators of isometries on CPLn. Furthermore, the twist allows us to define a covariant tensor calculus...
Citation Formats
V. Onemli and B. Tekin, “Kaluza-Klein monopole in AdS spacetime,” PHYSICAL REVIEW D, pp. 0–0, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39741.