No skyrmion hair for stationary spherically symmetric reflecting stars

Abstract

We investigate the existence of the skyrmion field in the background of an asymptotically flat stationary reflecting star. For this purpose, we consider the Einstein Skyrme system for which there is a skyrmion hair in the black hole case. We discuss spherically symmetric skyrmions and employ the hedgehog ansatz for the skyrmion field. We show that, in contrast to the black hole there is no skyrmion hair for a reflecting star.

arXiv comment11 pages, accepted for publication in Phys. Lett. B

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• Scalarization of compact stars in the scalar-Gauss-Bonnet gravity
• Analytical investigations on formations of hairy neutral reflecting shells in the scalar-Gauss-Bonnet gravity
• Stationary scalar hairy configurations supported by Neumann compact stars
• No scalar hair in nonminimal derivative coupling model for Neumann and Dirichlet reflecting star
• On instabilities of stationary scalar field configurations supported by reflecting compact stars