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arXiv 2402.09149gr-qc
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符合f(Q)引力中的静态、几何对称时空

Static, Cylindrically Symmetric Spacetimes in the Coincident f(Q) Gravity

Pınar Kirezli, Nilhan Özceylan

摘要:

本文考虑了具有重合f(Q)引力的静态柱对称时空。由于在对称平行引力场中的场方程适合于选择幂级数和指数形式的f(Q)函数,因此讨论了这些形式的理想流体解。能量密度,方向压力和能量条件绘制和分析几个不同的度量电位。虽然宇宙弦违反了两个f(Q)函数的所有能量条件,但列维-奇维塔解违反了f(Q)幂律函数的所有能量条件,但对于指数f(Q)引力,它们在小区域内满足。

英文摘要:

In this paper we consider a static, cylindrically symmetric spacetime with coincident f(Q) gravity. Since the field equation of this spacetime in symmetric teleparallel gravity is suitable for choosing the function of f(Q) in the form of power series and exponential forms, perfect fluid solutions of these forms are discussed. Energy densities, directional pressures and energy conditions are plotted and analysed for a few different metric potentials. Although cosmic strings violate all energy conditions in both f(Q) functions, the Levi-Civita solution violates all energy conditions in the power law function of f(Q), but for exponential f(Q) gravity they are satisfied in small regions.

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