No hair theorem for bound-state massless static scalar fields outside horizonless Neumann compact stars
arXiv:1905.04541 · doi:10.1016/j.physletb.2019.07.026
Abstract
We study no-hair theorem for horizonless objects, being subject to Neumann boundary conditions. For massive scalar fields, a no hair theorem for Neumann compact stars was proved by us in a previous paper, where the nonzero scalar field mass condition is essential in the proof. In the present work, for massless scalar fields, we prove a no hair theorem, which claims that bound-state massless static scalar fields cannot exist outside asymptotically flat horizonless neutral Neumann compact stars.
7 pages