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  Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data

Martinelli, M., Martins, C. J. A. P., Nesseris, S., Tutusaus, I., Blanchard, A., Camera, S., et al. (2021). Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data. Astronomy and Astrophysics, 654: A148. doi:10.1051/0004-6361/202141353.

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Martinelli, M., Author
Martins, C. J. A. P., Author
Nesseris, S., Author
Tutusaus, I., Author
Blanchard, A., Author
Camera, S., Author
Carbone, C., Author
Casas, S., Author
Pettorino, V., Author
Sakr, Z., Author
Yankelevich, V., Author
Sapone, D., Author
Amara, A., Author
Auricchio, N., Author
Bodendorf, C.1, Author              
Bonino, D., Author
Branchini, E., Author
Capobianco, V., Author
Carretero, J., Author
Castellano, M., Author
Cavuoti, S., AuthorCimatti, A., AuthorCledassou, R., AuthorCorcione, L., AuthorCostille, A., AuthorDegaudenzi, H., AuthorDouspis, M., AuthorDubath, F., AuthorDusini, S., AuthorEalet, A., AuthorFerriol, S., AuthorFrailis, M., AuthorFranceschi, E., AuthorGarilli, B., AuthorGiocoli, C., AuthorGrazian, A., AuthorGrupp, F.1, Author              Haugan, S. V. H., AuthorHolmes, W., AuthorHormuth, F., AuthorJahnke, K., AuthorKiessling, A., AuthorKümmel, M., AuthorKunz, M., AuthorKurki-Suonio, H., AuthorLigori, S., AuthorLilje, P. B., AuthorLloro, I., AuthorMansutti, O., AuthorMarggraf, O., AuthorMarkovic, K., AuthorMassey, R., AuthorMeneghetti, M., AuthorMeylan, G., AuthorMoscardini, L., AuthorNiemi, S. M., AuthorPadilla, C., AuthorPaltani, S., AuthorPasian, F., AuthorPedersen, K., AuthorPires, S., AuthorPoncet, M., AuthorPopa, L., AuthorRaison, F.1, Author              Rebolo, R., AuthorRhodes, J., AuthorRoncarelli, M., AuthorRossetti, E., AuthorSaglia, R.1, Author              Secroun, A., AuthorSeidel, G., AuthorSerrano, S., AuthorSirignano, C., AuthorSirri, G., AuthorStarck, J.-L., AuthorTavagnacco, D., AuthorTaylor, A. N., AuthorTereno, I., AuthorToledo-Moreo, R., AuthorValenziano, L., AuthorWang, Y., AuthorZamorani, G., AuthorZoubian, J., AuthorBaldi, M., AuthorBrescia, M., AuthorCongedo, G., AuthorConversi, L., AuthorCopin, Y., AuthorFabbian, G., AuthorFarinelli, R., AuthorMedinaceli, E., AuthorMei, S., AuthorPolenta, G., AuthorRomelli, E., AuthorVassallo, T., Author more..
1Optical and Interpretative Astronomy, MPI for Extraterrestrial Physics, Max Planck Society, ou_159895              


Free keywords: -
 Abstract: In physically realistic, scalar-field-based dynamical dark energy models (including, e.g., quintessence), one naturally expects the scalar field to couple to the rest of the model’s degrees of freedom. In particular, a coupling to the electromagnetic sector leads to a time (redshift) dependence in the fine-structure constant and a violation of the weak equivalence principle. Here we extend the previous Euclid forecast constraints on dark energy models to this enlarged (but physically more realistic) parameter space, and forecast how well Euclid, together with high-resolution spectroscopic data and local experiments, can constrain these models. Our analysis combines simulated Euclid data products with astrophysical measurements of the fine-structure constant, α, and local experimental constraints, and it includes both parametric and non-parametric methods. For the astrophysical measurements of α, we consider both the currently available data and a simulated dataset representative of Extremely Large Telescope measurements that are expected to be available in the 2030s. Our parametric analysis shows that in the latter case, the inclusion of astrophysical and local data improves the Euclid dark energy figure of merit by between 8% and 26%, depending on the correct fiducial model, with the improvements being larger in the null case where the fiducial coupling to the electromagnetic sector is vanishing. These improvements would be smaller with the current astrophysical data. Moreover, we illustrate how a genetic algorithms based reconstruction provides a null test for the presence of the coupling. Our results highlight the importance of complementing surveys like Euclid with external data products, in order to accurately test the wider parameter spaces of physically motivated paradigms.


Language(s): eng - English
 Dates: 2021-10-26
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1051/0004-6361/202141353
 Degree: -



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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
Publ. Info: France : EDP Sciences S A
Pages: - Volume / Issue: 654 Sequence Number: A148 Start / End Page: - Identifier: ISSN: 1432-0746
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1