...
首页> 外文期刊>International journal of modern physics, D. Gravitation, astrophysics, cosmology >String solutions in spherically-symmetric f(R) gravity vacuum
【24h】

String solutions in spherically-symmetric f(R) gravity vacuum

机译:球形 - 对称F(R)重力真空中的串溶液

获取原文
获取原文并翻译 | 示例
           

摘要

Dynamical evolution of the cosmic string in a spherically symmetric f(R) gravity vacuum is studied for a closed and straight string. We first set the background spacetime metric for a constant curvature scalar R = R-0, and obtain the Killing fields for it. Using the standard gauge coordinates and constraints for both closed and straight strings, we present the equation of motions and find the solutions of them. We then analyze the dynamics of the string by studying the behavior of the string radius and periastron radius, with respect to both proper time and azimuthal angle, for various values of f(R) functions. Consequently, we conclude that the value of f(R) dramatically affects the closed string collapse time and the straight string angular deviation.
机译:研究了闭合和直线的球形对称F(R)重力真空中宇宙串的动态演变。 我们首先设置恒定曲率标量r = r-0的后台空间度量,并获得杀死字段。 使用标准仪表坐标和对闭合和直线的约束,我们介绍了动作的方程并找到了它们的解决方案。 然后,我们通过研究串半径和PeriaStron半径的行为来分析字符串的动态,相对于适当的时间和方位角的角度,对于F(R)函数的各种值。 因此,我们得出结论,F(R)的值显着地影响闭合串塌陷时间和直线角偏差。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号