带电致密玻色子星的Phase Diagrams
Phase Diagrams of Charged Compact Boson Stars
摘要：
紧致玻色子星，其标量场在外部区域完全消失，出现在一个理论中，该理论涉及一个具有锥形势的{ \it无质量}复标量场，当与引力耦合时。在U（1）规范场存在下得到的带电紧致推广，表现出更有趣的特征。一方面，可以出现带电的致密玻色子壳，其标量场也在中心区域消失，而另一方面，带电的致密玻色子星的存在域表现出分叉点。第一个二维相图已经研究过了。在这里，我们将这些早期的研究扩展到更大范围的变量和研究额外的相图。然后，我们扩展这些研究，以获得3D相图，并提出这些与详细讨论他们的各个区域相对于分叉点，并认为，有一个无限系列的这样的分叉点。因此，该理论被认为在相图的特定领域中包含丰富的物理学。我们还讨论了该理论相图中相轨线的一些代表点的场对无量纲径向坐标的依赖性。
英文摘要：
Compact boson stars, whose scalar field vanishes identically in the exterior region, arise in a theory involving a {\it massless} complex scalar field with a conical potential, when coupled to gravity. Their charged compact generalizations, obtained in the presence of a U(1) gauge field, exhibit further interesting features. On the one hand, charged compact boson shells can arise, whose scalar field vanishes also in the central region, while on the other hand, the domain of existence of charged compact boson stars exhibits bifurcation points. First 2D phase diagrams have been studied before. Here we extend these earlier studies to a larger range of the variables and study additional phase diagrams. We then extend these studies to obtain 3D phase diagrams and present these with a detailed discussion of their various regions with respect to the bifurcation points and argue, that there is an infinite series of such bifurcation points. Thus the theory is seen to contain rich physics in a particular domain of the phase diagrams. We also discuss the dependence of the fields on the dimensionless radial coordinate for some representative points of the phase trajectories in the phase diagrams of the theory.
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