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General Relativity and Quantum Cosmology

arXiv:0711.4909 (gr-qc)
[Submitted on 30 Nov 2007]

Title:Detecting very-high-frequency relic gravitational waves by electromagnetic wave polarizations in a waveguide

Authors:M. L. Tong, Y. Zhang
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Abstract: The polarization vector (PV) of an electromagnetic wave (EW) will experience a rotation in a region of spacetime perturbed by gravitational waves (GWs). Based on this idea, Cruise's group has built an annular waveguide to detect GWs. We give detailed calculations of the rotations of the polarization vector of an EW caused by incident GWs from various directions and in various polarization states, and then analyze the accumulative effects on the polarization vector when the EW passes n cycles along the annular waveguide. We reexamine the feasibility and limitation of this method to detect GWs of high frequency around 100 MHz, in particular, the relic gravitational waves (RGWs). By comparing the spectrum of RGWs in the accelerating universe with the detector sensitivity of the current waveguide, it is found that the amplitude of the RGWs is too low to be detected by the waveguide detectors currently running. Possible ways of improvements on detection are discussed also.
Comments: 18pages, 10 figures, accepted by ChJAA
Subjects: General Relativity and Quantum Cosmology (gr-qc)
Cite as: arXiv:0711.4909 [gr-qc]
  (or arXiv:0711.4909v1 [gr-qc] for this version)
  https://doi.org/10.48550/arXiv.0711.4909
Journal reference: Chin. J. Astron. Astrophys. 8, 314, (2008)
Related DOI: https://doi.org/10.1088/1009-9271/8/3/08

Submission history

From: Ming Lei Tong [view email]
[v1] Fri, 30 Nov 2007 11:39:43 UTC (696 KB)
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