论文标题

在相对论的参数测试中,虚假的自由度

On parametric tests of relativity with false degrees of freedom

论文作者

Chua, Alvin J. K., Vallisneri, Michele

论文摘要

可以通过比较Ligo-Virgo数据中发现的二进制 - 刺激性信号与以人为自由度增强的波形模型来测试一般相对论。这种方法遭受了许多逻辑和实际的陷阱。 1)很难将意义归因于最终约束的严格度。 2)怀疑相对论与这些人工模型的贝叶斯模型比较是否可以为前者提供实际验证。 3)未知这些测试在多大程度上可能检测到没有计算波形的重力理论。相反,当有波形可用时,采用它们的测试将是优越的。

General relativity can be tested by comparing the binary-inspiral signals found in LIGO--Virgo data against waveform models that are augmented with artificial degrees of freedom. This approach suffers from a number of logical and practical pitfalls. 1) It is difficult to ascribe meaning to the stringency of the resultant constraints. 2) It is doubtful that the Bayesian model comparison of relativity against these artificial models can offer actual validation for the former. 3) It is unknown to what extent these tests might detect alternative theories of gravity for which there are no computed waveforms; conversely, when waveforms are available, tests that employ them will be superior.

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