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ell-Boson stars
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ell-Boson stars
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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.
Forward citations
Cited by 3 Pith papers
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Existence of nonrelativistic $\ell$- and multi-$\ell$-boson stars and their radial stability
Existence of an infinite class of spherically-symmetric solutions to the multi-field Schrödinger-Poisson system is established via global minimization of the energy functional on rotationally invariant H1 functions wi...
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Black Hole-Boson Star Binaries: Gravitational Wave Signals and Tidal Disruption
Numerical simulations of black hole-boson star binaries show that scalar self-interactions can suppress tidal disruption while radiative efficiency depends on the chosen potential.
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$\ell$-Boson stars in anti-de Sitter spacetime
ℓ-boson stars are constructed and their properties studied in asymptotically anti-de Sitter spacetime.
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