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On Schwarzschild’s Interior Solution and Perfect Fluid Star Model
Symmetry ( IF 2.940 ) Pub Date : 2020-10-13 , DOI: 10.3390/sym12101669
Elisabetta Barletta , Sorin Dragomir , Francesco Esposito

We solve the boundary value problem for Einstein’s gravitational field equations in the presence of matter in the form of an incompressible perfect fluid of density ρ and pressure field p(r) located in a ball r≤r0. We find a 1-parameter family of time-independent and radially symmetric solutions ga,ρa,pa:−2m 9κM/(4c2) identifies the “physical” (i.e., such that pa(r)≥0 and pa(r) is bounded in 0≤r≤r0) solutions {pa:a∈U0} for some neighbourhood U0⊂(−2m,+∞) of a=0. For every star model {ga:a0

中文翻译:

关于 Schwarzschild 的内部解和完美流星模型

我们解决了爱因斯坦引力场方程的边值问题,其中存在密度为 ρ 的不可压缩完美流体和位于球 r≤r0 中的压力场 p(r) 的物质。我们发现时间无关和径向对称解的 1 参数族 ga,ρa,pa:−2m 9κM/(4c2) 识别“物理”(即,使得 pa(r)≥0 且 pa(r) 是a=0 的某个邻域 U0⊂(−2m,+∞) 有界于 0≤r≤r0) 个解 {pa:a∈U0}。对于每个明星模型 {ga:a0
更新日期:2020-10-13
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