Abstract
Considering exact spacetimes representing rotating black holes and naked singularities, we study the possibility that the Sagnac effect detects i) higher dimensions, ii) rotation of black holes in higher dimension, and also, iii) distinguishes black holes from naked singularities. The results indicate that the Sagnac time delay gets affected by the presence of extra-dimension or its associated angular momentum. This time delay is also different in the spacetime of a naked singularity compared to that of a black hole. Hence, the Sagnac effect may be used as an experiment for better understanding of spacetimes with higher dimensions or those that admit naked singularities.
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This manuscript has associated data in a data repository. [Authors’ comment: The data that support the findings of this study are available from the corresponding author, [AHZ], upon reasonable request.]
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Acknowledgements
V.B.B. is partially supported by the National Council for Scientific and Technological Development – CNPq (Brazil), through the Research Project No. 307211/2020-7. This paper is published as part of a research project supported by the University of Maragheh Research Affairs Office.
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Ziaie, A.H., Moradpour, H., Bezerra, V.B. et al. On some applications of the Sagnac effect. Eur. Phys. J. Plus 137, 628 (2022). https://doi.org/10.1140/epjp/s13360-022-02844-y
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DOI: https://doi.org/10.1140/epjp/s13360-022-02844-y