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arXiv 2212.03098gr-qcastro-ph.HEastro-ph.SRhep-phhep-th
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光标量与物质耦合的严格脉冲星定时边界

Stringent Pulsar Timing Bounds on Light Scalar Couplings to Matter

David Benisty, Philippe Brax, Anne-Christine Davis

摘要:

讨论了与物质共形耦合和非形式耦合的标量张量理论对脉冲星时间的限制。将动力学简化为质心系中的运动,并使用平均异常参数化,我们发现了由共形和非形式相互作用引起的第一个后牛顿修正,其形式为广义拟开普勒解。我们还导出了标量辐射引起的辐射反作用力和相应的后开普勒参数。我们使用不同的脉冲星到达时间(TOA)数据集探测标量修正PKP。特别是,我们专注于大的轨道频率的系统的非正式耦合引起的PKP项的贡献是敏感的更高的频率。我们发现,最受约束的{ {脉冲星定时}}是PSR B1913+16和双脉冲星PSR J 0737 - 3039 A/B,是从太阳系中的Shapiro效应获得的共形耦合的Cassini束缚的量级。{ {使用其他脉冲星定时的组合约束给出了共形耦合$β^2 < 2.33 \cdot 10^{-5}$的上限和$Λ\geq 1.12 \ {\rm MeV}$的非正式耦合尺度的下限,其分别与Cassini约束和GW-170817约束相当}}。最后讨论了未来脉冲星伴黑洞定时的测量。

英文摘要:

Pulsar Timing constraints on scalar-tensor theories with conformal and disformal couplings to matter are discussed. Reducing the dynamics to the motion in the centre of mass frame and using the mean anomaly parametrisation, we find the first post-Newtonian corrections induced by the conformal and disformal interactions in the form of a generalized quasi-Keplerian solution. We also derive the radiation reaction force due to scalar radiation and the corresponding Post-Keplerian Parameters (PKP). We use different pulsar time of arrival (TOA) data sets to probe the scalar corrections to the PKP. In particular, we focus on systems with large orbital frequencies as the contributions to the PKP terms induced by the disformal coupling are sensitive to higher frequencies. We find that the most constraining { {pulsar timings}} are PSR B1913+16 and the double pulsar PSR J0737-3039A/B, being {of the order of} the Cassini bound on the conformal coupling obtained from the Shapiro effect in the solar system. { {The combined constraints using other pulsar timings give an upper bound on the conformal coupling $β^2 < 2.33 \cdot 10^{-5}$ and a lower bound on the disformal coupling scale of $Λ\geq 1.12 \ {\rm MeV}$ which is comparable to the Cassini bound and to the GW-170817 constraints respectively}}. Future measurements for pulsar timing with black hole companions are also discussed.

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。

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