Scalar soliton stars and black holes

Abstract

Explicit solutions of scalar soliton stars and scalar black holes are given. The former has no horizon and the latter does. The soliton stars are cold, stable, and coherent states of very large mass M∼($l_P$m${)}^{\mathrm{-}4}$m, with $l_P$ the Planck length, m the mass of the relevant scalar field, and ħ=c=1.