Rotating Boson Stars in 5 Dimensions
Betti Hartmann, Burkhard Kleihaus, Jutta Kunz, Meike List
TL;DR
This paper investigates five-dimensional rotating boson stars with complex scalar fields, revealing solutions with specific symmetries, regularity, and flat spacetime limits, expanding understanding of higher-dimensional solitonic objects.
Contribution
It introduces a novel ansatz for rotating boson stars in five dimensions with equal angular momenta, providing solutions with nontrivial radial dependence and flat spacetime limits.
Findings
Solutions are globally regular and asymptotically flat.
Scalar charge equals the sum of angular momenta.
Existence of solutions in both flat and curved spacetime.
Abstract
We study rotating boson stars in five spacetime dimensions. The boson fields consist of a complex doublet scalar field. Considering boson stars rotating in two orthogonal planes with both angular momenta of equal magnitude, a special ansatz for the boson field and the metric allows for solutions with nontrivial dependence on the radial coordinate only. The charge of the scalar field equals the sum of the angular momenta. The rotating boson stars are globally regular and asymptotically flat. For our choice of a sixtic potential the rotating boson star solutions possess a flat spacetime limit. We study the solutions in flat and curved spacetime.
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