标题： 一种满足Karmarkar条件的可行且精确的EFE解的新类：冷星建模的应用 显示英文标题

标题： A new class of viable and exact solutions of EFE's with Karmarkar conditions: An application to cold star modeling

摘要： 在本工作中，我们提出了一种理论框架，在爱因斯坦的经典广义相对论范围内，该框架模拟如PSR J1614-2230和SAX J1808.4-3658这样的致密天体。 假设致密天体的内部由一类I时空描述，解出了爱因斯坦场方程。 由此要求产生的所谓的Karmarkar条件被积分，以将引力行为简化为一个生成函数。 通过引用物理原理，我们采用了一个足够稳健的引力势形式，可以准确描述致密天体。 我们的模型满足物理现实恒星结构的所有要求。 显示英文摘要

摘要： In this work we present a theoretical framework within Einstein's classical general relativity which models stellar compact objects such as PSR J1614-2230 and SAX J1808.4-3658. The Einstein field equations are solved by assuming that the interior of the compact object is described by a class I spacetime. The so-called Karmarkar condition arising from this requirement is integrated to reduce the gravitational behaviour to a single generating function. By appealing to physics we adopt a form for the gravitational potential which is sufficiently robust to accurately describe compact objects. Our model satisfies all the requirements for physically realistic stellar structures.