Probing massive scalar fields from a pulsar in a stellar triple system

Probing massive scalar fields from a pulsar in a stellar triple system
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探测恒星三重系统中脉冲星的巨大标量场

DOI:
10.1088/1361-6382/ab9933
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发表时间:
2020
影响因子:
3.5
通讯作者:
Yagi, Kent
Yagi, Kent
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Seymour, Brian C;Yagi, Kent

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脉冲星计时观测精确地验证了广义相对论。最近,等级三重系统PSR J0337+ 1715对强等效原理中第五种违反力的存在提出了新的限制。存在许多具有大质量(伪)标量场的替代引力理论来解释从大尺度宇宙的加速膨胀到小尺度QCD强CP问题的各种现象。在这里,我们发展了第五种力效应的一般形式,这种效应涉及由弦理论产生的大量标量场。通过PSR J0337的测量,我们发现了超越广义相对论的具有大质量标量场的最简单理论的最强边界,并在其他具有轴子、暗物质介质和高曲率修正的理论中推导出新的约束。这些结果表明,三重系统J0337为大规模标量场提供了严格的测试。
Pulsar timing observations precisely test general relativity. Recently, the hierarchical triple system PSR J0337+ 1715 has placed new constraints on the existence of a fifth force from violation in the strong equivalence principle. Many alternative gravity theories exist with massive (pseudo-) scalar fields to explain a variety of phenomena from the accelerating expansion of the Universe at large scales to the QCD strong CP problem at small scales. We here develop a generic formalism for the fifth force effect in theories involving massive scalar fields arising from eg string theory. With PSR J0337 measurements, we find the strongest bound on the simplest theory with a massive scalar field beyond general relativity and derive new constraints in other theories with axions, dark matter mediators, and higher-curvature corrections. These results show that the triple system J0337 provides a stringent test for massive scalar fields.
DOI: 10.1143/ptp.126.511
发表时间: 2011-05
影响因子: --
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