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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.; Carbone, C.; Casas, S.; Pettorino, V.; Sakr, Z.; Yankelevich, V.; Sapone, D.; Amara, A.; Auricchio, N.; Bodendorf, C.; Bonino, D.; Branchini, E.; Capobianco, V.; Carretero, J.; Castellano, M.; Cavuoti, S.; Cimatti, A.; Cledassou, R.; Corcione, L.; Costille, A.; Degaudenzi, H.; Douspis, M.; Dubath, F.; Dusini, S.; Ealet, A.; Ferriol, S.; Frailis, M.; Franceschi, E.; Garilli, B.; Giocoli, C.; Grazian, A.; Grupp, F.; Haugan, S.V.H.; Holmes, W.; Hormuth, F.; Jahnke, K.; Kiessling, A.; Kümmel, M.; Kunz, M.; Kurki-Suonio, H.; Ligori, S.; Lilje, P.B.; Lloro, I.; Mansutti, O.; Marggraf, O.; Markovic, K.; Massey, R.; Meneghetti, M.; Meylan, G.; Moscardini, L.; Niemi, S.M.; Padilla, C.; Paltani, S.; Pasian, F.; Pedersen, K.; Pires, S.; Poncet, M.; Popa, L.; Raison, F.; Rebolo, R.; Rhodes, J.; Roncarelli, M.; Rossetti, E.; Saglia, R.; Secroun, A.; Seidel, G.; Serrano, S.; Sirignano, C.; Sirri, G.; Starck, J....

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Authors

M. Martinelli

C.J.A.P. Martins

S. Nesseris

I. Tutusaus

A. Blanchard

S. Camera

C. Carbone

S. Casas

V. Pettorino

Z. Sakr

V. Yankelevich

D. Sapone

A. Amara

N. Auricchio

C. Bodendorf

D. Bonino

E. Branchini

V. Capobianco

J. Carretero

M. Castellano

S. Cavuoti

A. Cimatti

R. Cledassou

L. Corcione

A. Costille

H. Degaudenzi

M. Douspis

F. Dubath

S. Dusini

A. Ealet

S. Ferriol

M. Frailis

E. Franceschi

B. Garilli

C. Giocoli

A. Grazian

F. Grupp

S.V.H. Haugan

W. Holmes

F. Hormuth

K. Jahnke

A. Kiessling

M. Kümmel

M. Kunz

H. Kurki-Suonio

S. Ligori

P.B. Lilje

I. Lloro

O. Mansutti

O. Marggraf

K. Markovic

M. Meneghetti

G. Meylan

L. Moscardini

S.M. Niemi

C. Padilla

S. Paltani

F. Pasian

K. Pedersen

S. Pires

M. Poncet

L. Popa

F. Raison

R. Rebolo

J. Rhodes

M. Roncarelli

E. Rossetti

R. Saglia

A. Secroun

G. Seidel

S. Serrano

C. Sirignano

G. Sirri

J.-L. Starck

D. Tavagnacco

A.N. Taylor

I. Tereno

R. Toledo-Moreo

L. Valenziano

Y. Wang

G. Zamorani

J. Zoubian

M. Baldi

M. Brescia

G. Congedo

L. Conversi

Y. Copin

G. Fabbian

R. Farinelli

E. Medinaceli

S. Mei

G. Polenta

E. Romelli

T. Vassallo



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.

Citation

Martinelli, M., Martins, C., Nesseris, S., Tutusaus, I., Blanchard, A., Camera, S., …Vassallo, T. (2021). Euclid: Constraining dark energy coupled to electromagnetism using astrophysical and laboratory data. Astronomy & Astrophysics, 654, Article A148. https://doi.org/10.1051/0004-6361/202141353

Journal Article Type Article
Acceptance Date Aug 19, 2021
Online Publication Date Oct 26, 2021
Publication Date 2021-10
Deposit Date Dec 6, 2021
Publicly Available Date Dec 6, 2021
Journal Astronomy and astrophysics.
Print ISSN 0004-6361
Electronic ISSN 1432-0746
Publisher EDP Sciences
Peer Reviewed Peer Reviewed
Volume 654
Article Number A148
DOI https://doi.org/10.1051/0004-6361/202141353

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Copyright Statement
Martinelli, M. et al., A&A, vol.654, A148, 2021, reproduced with permission, © ESO.





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