$\ell$-Boson stars

Abstract

We present new, fully nonlinear numerical solutions to the static, spherically symmetric Einstein-Klein-Gordon system for a collection of an arbitrary odd number $N$ of complex scalar fields with an internal $U(N)$ symmetry and no self-interactions. These solutions, which we dub $\ell$-boson stars, are parametrized by an angular momentum number $\ell =(N-1)/2$, an excitation number $n$, and a continuous parameter representing the amplitude of the fields. They are regular at every point and possess a finite total mass. For $\ell =0$ the standard spherically symmetric boson stars are recovered. We determine their generalizations for $\ell >0$, and show that they give rise to a large class of new static configurations which might have a much larger compactness ratio than $\ell =0$ stars.

11 pages, 3 figures, 1 table. To appear as a Letter in Classical and Quantum Gravity

References in corpus (8)

• Axion Cosmology
• Ultralight scalars as cosmological dark matter
• Cosmic Structure as the Quantum Interference of a Coherent Dark Wave
• Accretion disk onto boson stars: a way to supplant black holes candidates
• Bosonic gas as a Galactic Dark Matter Halo
• Constraining scalar fields with stellar kinematics and collisional dark matter
• Critical Behavior in the Gravitational Collapse of a Scalar Field with Angular Momentum in Spherical Symmetry
• Linear perturbations of self-gravitating spherically symmetric configurations

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