Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure
Constrained measurements of fundamental physical constants using astronomical observational data represent a powerful method for investigating potential new physics. In particular, the dispersion measure (DM) of fast radio bursts (FRBs), which probes the electron density along their propagation path...
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IOP Publishing
2025-01-01
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| author | Shi-Yuan Wang Jun-Qing Xia |
| author_facet | Shi-Yuan Wang Jun-Qing Xia |
| author_sort | Shi-Yuan Wang |
| collection | DOAJ |
| description | Constrained measurements of fundamental physical constants using astronomical observational data represent a powerful method for investigating potential new physics. In particular, the dispersion measure (DM) of fast radio bursts (FRBs), which probes the electron density along their propagation paths, may be influenced by the spacetime variation of the fine-structure constant α . In this study, we analyze the cross-correlation signal between foreground galaxies and the DM of background FRBs to constrain the evolution of α . Assuming large-scale structure galaxy surveys with the capabilities of the China Space Station Telescope at z = 0.15 and a mock FRB survey with N _FRB = 10 ^5 at z = 0.4, we test how well α variation can be constrained, with a standard deviation of σ (Δ α / α ) = 0.0007 at z = 0.15. Furthermore, taking into account the nonminimal coupling between the scalar field and the electromagnetic field, the variation in α can lead to the nonconservation of the photon number along geodesics. This would result in a violation of the CDDR and affect the evolution of the cosmic microwave background (CMB) temperature. In this work, we obtain constraint results on the CDDR parameter η and the parameter β governing CMB temperature evolution at z = 0.15, yielding σ ( η ) = 0.0004 and σ ( β ) = 0.0006, respectively. Finally, we relate the variation in α to the time evolution of the proton-to-electron mass ratio, reporting a standard deviation of σ (Δ μ / μ ) = 0.002 at z = 0.15. Future FRB surveys hold significant potential for advancing our understanding of the evolution of fundamental physical constants. |
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| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| spelling | doaj-art-0a9bceb3a59e4fa4ac6b67b2efb5d2682025-08-20T02:41:20ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198228610.3847/1538-4357/adba4aConstraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion MeasureShi-Yuan Wang0Jun-Qing Xia1School of Physics and Astronomy, Beijing Normal University , Beijing 100875, People’s Republic of China ; xiajq@bnu.edu.cn; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing 100875, People’s Republic of ChinaSchool of Physics and Astronomy, Beijing Normal University , Beijing 100875, People’s Republic of China ; xiajq@bnu.edu.cn; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing 100875, People’s Republic of ChinaConstrained measurements of fundamental physical constants using astronomical observational data represent a powerful method for investigating potential new physics. In particular, the dispersion measure (DM) of fast radio bursts (FRBs), which probes the electron density along their propagation paths, may be influenced by the spacetime variation of the fine-structure constant α . In this study, we analyze the cross-correlation signal between foreground galaxies and the DM of background FRBs to constrain the evolution of α . Assuming large-scale structure galaxy surveys with the capabilities of the China Space Station Telescope at z = 0.15 and a mock FRB survey with N _FRB = 10 ^5 at z = 0.4, we test how well α variation can be constrained, with a standard deviation of σ (Δ α / α ) = 0.0007 at z = 0.15. Furthermore, taking into account the nonminimal coupling between the scalar field and the electromagnetic field, the variation in α can lead to the nonconservation of the photon number along geodesics. This would result in a violation of the CDDR and affect the evolution of the cosmic microwave background (CMB) temperature. In this work, we obtain constraint results on the CDDR parameter η and the parameter β governing CMB temperature evolution at z = 0.15, yielding σ ( η ) = 0.0004 and σ ( β ) = 0.0006, respectively. Finally, we relate the variation in α to the time evolution of the proton-to-electron mass ratio, reporting a standard deviation of σ (Δ μ / μ ) = 0.002 at z = 0.15. Future FRB surveys hold significant potential for advancing our understanding of the evolution of fundamental physical constants.https://doi.org/10.3847/1538-4357/adba4aCosmologyRadio transient sources |
| spellingShingle | Shi-Yuan Wang Jun-Qing Xia Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure The Astrophysical Journal Cosmology Radio transient sources |
| title | Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure |
| title_full | Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure |
| title_fullStr | Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure |
| title_full_unstemmed | Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure |
| title_short | Constraints on Evolutions of Fundamental Constants from Clustering of Fast Radio Burst Dispersion Measure |
| title_sort | constraints on evolutions of fundamental constants from clustering of fast radio burst dispersion measure |
| topic | Cosmology Radio transient sources |
| url | https://doi.org/10.3847/1538-4357/adba4a |
| work_keys_str_mv | AT shiyuanwang constraintsonevolutionsoffundamentalconstantsfromclusteringoffastradioburstdispersionmeasure AT junqingxia constraintsonevolutionsoffundamentalconstantsfromclusteringoffastradioburstdispersionmeasure |