奇异物质的约束（一）：静态解
Confinement of exotic matter. I. Static solutions
AI总结：
提出带奇异物质核的${\cal E}$-玻色子星静态球对称解，发现正则场可呈壳状分布且紧致度能超越Buchdahl极限。
摘要：
我们提出了${\cal E}$-玻色子星：一种带有奇异物质核的玻色子星新构型；该奇异物质由一个具有自相互作用项和相反符号动能项的实大质量标量场描述。另一个标量场是正则的，使得该系统类似于quintom宇宙学场景的物质组分。考虑静态球对称情形，我们获得了两种场呈同心球分布的解，以及另一些具有显著特征的解：正则物质被向外推挤，形成正则场的壳状分布，而中心存在奇异物质核。我们展示了此类${\cal E}$-玻色子星的全局性质，并强调这些构型与通常玻色子星的差异。特别地，我们获得了紧致度超越Buchdahl极限的情形。
英文摘要：
We present the ${\cal E}$-boson star: A novel configuration of a boson star with an exotic matter nucleus; the exotic matter being described by a real massive scalar field with self-interaction term and kinetic term of the opposite sign. The other scalar field is canonical, so that the system is similar to the material component of the quintom cosmological scenario. Considering the static spherical symmetric case, we obtain cases where both fields are distributed as concentric spheres, and others with the remarkable feature that the canonical matter is pushed outwards and obtain a shell-like distribution of the canonical field, with a nucleus of exotic matter at the center. We present global properties of such ${\cal E}$-boson stars and stress the differences that these configuration have with respect to the usual boson stars. In particular, we obtain cases where the compactness goes beyond the Buchdahl limit.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
