模拟常见和不常见的各向异性球体
Modeling usual and unusual anisotropic spheres
摘要：
在本文中，我们研究各向异性球建立从已知的静态球的解决方案。特别是，我们感兴趣的物理后果的“小”偏离物理上合理的配置。所得到的解光滑地依赖于自由参数。通过将这些参数设置为零，重新获得起始种子溶液。我们应用我们的程序，详细采取种子解决方案的Florides指标，和托尔曼IV解决方案。我们表明，所选择的托尔曼IV，也Heint IIa Durg IV，V完美的流体解决方案，可用于生成一类参数的解决方案，其中各向异性因子具有功能，回忆玻色子星。这表明玻色子星可以通过适当地“扰动”一个完美的流体溶液（至少对于所考虑的种子度量）而出现。最后，从Tolman IV，Heint IIa和Durg IV，V解开始，我们建立了具有适当边界条件的各向异性引力星源。
英文摘要：
In this paper, we study anisotropic spheres built from known static spherical solutions. In particular, we are interested in the physical consequences of a "small" departure from a physically sensible configuration. The obtained solutions smoothly depend on free parameters. By setting these parameters to zero, the starting seed solution is regained. We apply our procedure in detail by taking as seed solutions the Florides metrics, and the Tolman IV solution. We show that the chosen Tolman IV, and also Heint IIa Durg IV,V perfect fluid solutions, can be used to generate a class of parametric solutions where the anisotropic factor has features recalling boson stars. This is an indication that boson stars could emerge by "perturbing" appropriately a perfect fluid solution (at least for the seed metrics considered). Finally, starting with Tolman IV, Heint IIa and Durg IV,V solutions, we build anisotropic gravastar-like sources with the appropriate boundary conditions.
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