Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-08-18
Phys.Rev.D81:044001,2010
Physics
High Energy Physics
High Energy Physics - Theory
15 pages, 1 figures
Scientific paper
10.1103/PhysRevD.81.044001
We obtain a class of slowly rotating charged Kaluza-Klein black hole solutions of the five-dimensional Einstein-Maxwell-dilaton theory with arbitrary dilaton coupling constant. At infinity, the spacetime is effectively four-dimensional. In the absence of the squashing function, our solution reduces to the five-dimensional asymptotically flat slowly rotating charged dilaton black hole solution with two equal angular momenta. We calculate the mass, the angular momentum and the gyromagnetic ratio of these rotating Kaluza-Klein dilaton black holes. It is shown that the dilaton field and the non-trivial asymptotic structure of the solutions modify the gyromagnetic ratio of the black holes. We also find that the gyromagnetic ratio crucially depends on the dilaton coupling constant, \alpha, and decreases with increasing \alpha for any size of the compact extra dimension.
Allahverdizadeh Masoud
Matsuno Ken
Sheykhi Ahmad
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