Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant
Abstract A new method based on large scale structure observations is proposed to probe a possible temporal variation of the fine-structure constant ( $$\alpha $$ α ). Our analyses are based on time-delay of Strong Gravitational Lensing and Type Ia Supernovae observations. By considering the runaway...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-06-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-021-09319-x |
| _version_ | 1819144705798045696 |
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| author | L. R. Colaço J. E. Gonzalez R. F. L. Holanda |
| author_facet | L. R. Colaço J. E. Gonzalez R. F. L. Holanda |
| author_sort | L. R. Colaço |
| collection | DOAJ |
| description | Abstract A new method based on large scale structure observations is proposed to probe a possible temporal variation of the fine-structure constant ( $$\alpha $$ α ). Our analyses are based on time-delay of Strong Gravitational Lensing and Type Ia Supernovae observations. By considering the runaway dilaton scenario, where the cosmological temporal evolution of the fine-structure constant is given by $$\frac{\Delta \alpha }{\alpha } \approx -\gamma \ln {(1+z)}$$ Δ α α ≈ - γ ln ( 1 + z ) , we obtain limits on the physical properties parameter of the model ( $$\gamma $$ γ ) at the level $$10^{-2}$$ 10 - 2 ( $$1\sigma $$ 1 σ ). Although our limits are less restrictive than those obtained by quasar spectroscopy, the approach presented here provides new bounds on the possibility of $$\frac{\Delta \alpha }{\alpha } \ne 0$$ Δ α α ≠ 0 at a different range of redshifts. |
| first_indexed | 2024-12-22T12:46:23Z |
| format | Article |
| id | doaj.art-60bfbc0d520e43f299d71ce3def515d1 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-22T12:46:23Z |
| publishDate | 2021-06-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-60bfbc0d520e43f299d71ce3def515d12022-12-21T18:25:19ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-06-018161910.1140/epjc/s10052-021-09319-xGravitational lens time-delay as a probe of a possible time variation of the fine-structure constantL. R. Colaço0J. E. Gonzalez1R. F. L. Holanda2Departamento de Física, Universidade Federal do Rio Grande do NorteDepartamento de Física, Universidade Federal do Rio Grande do NorteDepartamento de Física, Universidade Federal do Rio Grande do NorteAbstract A new method based on large scale structure observations is proposed to probe a possible temporal variation of the fine-structure constant ( $$\alpha $$ α ). Our analyses are based on time-delay of Strong Gravitational Lensing and Type Ia Supernovae observations. By considering the runaway dilaton scenario, where the cosmological temporal evolution of the fine-structure constant is given by $$\frac{\Delta \alpha }{\alpha } \approx -\gamma \ln {(1+z)}$$ Δ α α ≈ - γ ln ( 1 + z ) , we obtain limits on the physical properties parameter of the model ( $$\gamma $$ γ ) at the level $$10^{-2}$$ 10 - 2 ( $$1\sigma $$ 1 σ ). Although our limits are less restrictive than those obtained by quasar spectroscopy, the approach presented here provides new bounds on the possibility of $$\frac{\Delta \alpha }{\alpha } \ne 0$$ Δ α α ≠ 0 at a different range of redshifts.https://doi.org/10.1140/epjc/s10052-021-09319-x |
| spellingShingle | L. R. Colaço J. E. Gonzalez R. F. L. Holanda Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant European Physical Journal C: Particles and Fields |
| title | Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant |
| title_full | Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant |
| title_fullStr | Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant |
| title_full_unstemmed | Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant |
| title_short | Gravitational lens time-delay as a probe of a possible time variation of the fine-structure constant |
| title_sort | gravitational lens time delay as a probe of a possible time variation of the fine structure constant |
| url | https://doi.org/10.1140/epjc/s10052-021-09319-x |
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