论文标题
通过嵌入方法，带有大量标量场的布兰斯 - 迪克重力中充电的各向异性奇怪星星
Charged anisotropic strange stars in Brans-Dicke gravity with a massive scalar field through embedding approach
论文作者
论文摘要
在该博览会中，我们在布兰斯·迪克（BD）形式主义中施放了大量标量场的情况下，寻求爱因斯坦 - 马克斯韦尔场方程的解决方案，该形式描述了充满各向异性奇怪的恒星。内部时空是通过嵌入类别的球形对称静态度量来描述的。这将问题降低为度量电位的单一生成函数，该功能是通过基于恒星内部每个内部的规律性来吸引物理学选择的。根据稳定性，因果关系和规律性，对最终的模型进行了严格的身体检查。我们表明，我们的解决方案描述了诸如PSR J1903+327之类的紧凑对象； CEN X-3; EXO 1785-248 \＆LMC X-4达到极好的近似值。我们调查的新结果表明，标量场导致较高的表面电荷密度，进而影响带电恒星的修改后的buchdahl极限所施加的紧凑性以及上下值。我们的结果还表明，来自完全不同的来源夫妇的电场和标量场可以改变物理特征，例如Mass-Radius关系和紧凑型物体的表面红移。通过BD耦合常数增加$ω_{bd} $，电力和标量场的叠加得到了增强。
In this exposition, we seek solutions of the Einstein-Maxwell field equations in the presence of a massive scalar field cast in the Brans-Dicke (BD) formalism which describes charged anisotropic strange stars. The interior spacetime is described by a spherically symmetric static metric of embedding class I. This reduces the problem to a single-generating function of the metric potential which is chosen by appealing to physics based on regularity at each interior point of the stellar interior. The resulting model is subjected to rigorous physical checks based on stability, causality and regularity. We show that our solutions describe compact objects such as PSR J1903+327; Cen X-3; EXO 1785-248 \& LMC X-4 to an excellent approximation. Novel results of our investigation reveal that the scalar field leads to higher surface charge densities which in turn affects the compactness and upper and lower values imposed by the modified Buchdahl limit for charged stars. Our results also show that the electric and scalar fields which originate from entirely different sources couple to alter physical characteristics such as mass-radius relation and surface redshift of compact objects. This superposition of the electric and scalar fields is enhanced by an increase in the BD coupling constant, $ω_{BD}$.
