Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae
Abstract In order to probe a possible time variation of the fine-structure constant ( $$\alpha $$ α ), we propose a new method based on Strong Gravitational Lensing and Type Ia Supernovae observations. By considering a class of runaway dilaton models, where $$\frac{\Delta \alpha }{\alpha }= - \gamma...
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Series: | European Physical Journal C: Particles and Fields |
Online Access: | https://doi.org/10.1140/epjc/s10052-021-09625-4 |
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doaj-2454927dd67d4d989674c44a183332912021-09-19T11:18:22ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522021-09-018191910.1140/epjc/s10052-021-09625-4Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia SupernovaeL. R. Colaço0R. F. L. Holanda1R. Silva2Departamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do NorteDepartamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do NorteDepartamento de Física Teórica e Experimental, Universidade Federal do Rio Grande do NorteAbstract In order to probe a possible time variation of the fine-structure constant ( $$\alpha $$ α ), we propose a new method based on Strong Gravitational Lensing and Type Ia Supernovae observations. By considering a class of runaway dilaton models, where $$\frac{\Delta \alpha }{\alpha }= - \gamma \ln {(1+z)}$$ Δ α α = - γ ln ( 1 + z ) , we obtain constraints on $$\frac{\Delta \alpha }{\alpha }$$ Δ α α at the level $$\gamma \sim 10^{-2}$$ γ ∼ 10 - 2 ( $$\gamma $$ γ captures the physical properties of the model). Since the data set covers the redshift range $$0.075 \le z \le 2.2649$$ 0.075 ≤ z ≤ 2.2649 , the constraints derived here provide independent bounds on a possible time variation of $$\alpha $$ α at low, intermediate and high redshifts.https://doi.org/10.1140/epjc/s10052-021-09625-4 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
L. R. Colaço R. F. L. Holanda R. Silva |
spellingShingle |
L. R. Colaço R. F. L. Holanda R. Silva Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae European Physical Journal C: Particles and Fields |
author_facet |
L. R. Colaço R. F. L. Holanda R. Silva |
author_sort |
L. R. Colaço |
title |
Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae |
title_short |
Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae |
title_full |
Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae |
title_fullStr |
Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae |
title_full_unstemmed |
Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae |
title_sort |
probing variation of the fine-structure constant in runaway dilaton models using strong gravitational lensing and type ia supernovae |
publisher |
SpringerOpen |
series |
European Physical Journal C: Particles and Fields |
issn |
1434-6044 1434-6052 |
publishDate |
2021-09-01 |
description |
Abstract In order to probe a possible time variation of the fine-structure constant ( $$\alpha $$ α ), we propose a new method based on Strong Gravitational Lensing and Type Ia Supernovae observations. By considering a class of runaway dilaton models, where $$\frac{\Delta \alpha }{\alpha }= - \gamma \ln {(1+z)}$$ Δ α α = - γ ln ( 1 + z ) , we obtain constraints on $$\frac{\Delta \alpha }{\alpha }$$ Δ α α at the level $$\gamma \sim 10^{-2}$$ γ ∼ 10 - 2 ( $$\gamma $$ γ captures the physical properties of the model). Since the data set covers the redshift range $$0.075 \le z \le 2.2649$$ 0.075 ≤ z ≤ 2.2649 , the constraints derived here provide independent bounds on a possible time variation of $$\alpha $$ α at low, intermediate and high redshifts. |
url |
https://doi.org/10.1140/epjc/s10052-021-09625-4 |
work_keys_str_mv |
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