用射电望远镜测试速度相关CPT破坏引力
Testing velocity-dependent CPT-violating gravitational forces with radio pulsars
摘要：
在有效场论的精神下，标准模型扩展（SME）提供了一个全面的框架来系统地探讨Lorentz/CPT破坏的可能性。在纯引力领域，质量维数大于4的算符虽然一般有利于短程实验，但很难用天文学规模的系统进行研究。但是，如果首阶效应是CPT破坏的和速度相关的，则有例外。在这里，我们使用精心选择的相对论性脉冲星二元系统研究纯重力领域中违反CPT对称性的最低阶算子。将已有的分析结果应用于双星轨道的动力学，我们对质量维为5的Lorentz/CPT破坏的各种系数进行了约束。这些约束条件是首次从后牛顿动力学中导出的，与从引力波传播的运动学中得到的约束条件是互补的。
英文摘要：
In the spirit of effective field theory, the Standard-Model Extension (SME) provides a comprehensive framework to systematically probe the possibility of Lorentz/CPT violation. In the pure gravity sector, operators with mass dimension larger than 4, while in general being advantageous to short-range experiments, are hard to investigate with systems of astronomical size. However, there is exception if the leading-order effects are CPT-violating and velocity-dependent. Here we study the lowest-order operators in the pure gravity sector that violate the CPT symmetry with carefully chosen relativistic binary pulsar systems. Applying the existing analytical results to the dynamics of a binary orbit, we put constraints on various coefficients for Lorentz/CPT violation with mass dimension 5. These constraints, being derived from the post-Newtonian dynamics for the first time, are complementary to those obtained from the kinematics in the propagation of gravitational waves.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
