标题： 从爱因斯坦方程的精确分段连续解中得到的三层前子星模型 显示英文标题

标题： A three-layer preon star model from exact piecewise-continuous solutions of Einstein's equations

摘要： 爱因斯坦方程被代数求解，以模拟一个由预子气体核心、带电热夸克-胶子等离子体壳层和带电强子物质外层组成的混合天体致密物体，该外层与外部雷斯纳-诺德斯特罗姆真空匹配。 分段连续的度规以及压力和密度函数由处处行为良好的多项式组成。 每个界面处的边界条件为每层以及整个恒星提供了适用的物理参数估计。 显示英文摘要

摘要： The Einstein equations are solved algebraically to model a hybrid astrophysical compact object consisting of a preon gas core, a mantle of electrically charged hot quark-gluon plasma, and an outer envelope of charged hadronic matter which is matched to an exterior Reissner-Nordstrom vacuum. The piecewise-continuous metric and the pressure and density functions consist of polynomials that are everywhere well-behaved. Boundary conditions at each interface yield estimates for physical parameters applicable to each layer, and to the star as a whole.