Gaussian processes reconstruction of the dark energy potential. Issue 11 (1st November 2022)

• Record Type: Journal Article
• Authors: Jesus, J.F.; Valentim, R.; Escobal, A.A.; Pereira, S.H.; Benndorf, D.
• Is Part Of: Journal of cosmology and astroparticle physics. Volume 2022:Issue 11(2022)
• Publication Date: 2022-11-01
• Subjects: dark energy theory -- Statistical sampling techniques; Cosmology -- Periodicals; Astrophysics -- Periodicals; 523.0105
• DOI: 10.1088/1475-7516/2022/11/037
• Languages: English
• ISSNs: 1475-7516

Abstract

Abstract: Scalar Fields (SF) have emerged as natural candidates for dark energy as quintessential or phantom fields, as they are the main ingredient of inflation theories. Instead of assuming some form for the scalar field potential, however, this work reconstructs the SF potential directly from observational data, namely, Hubble and SNe Ia data. We show that two popular forms for the SF potentials, namely, the power-law and the quadratic free-field, are compatible with the reconstructions thus obtained, at least for some choices of the priors of the matter density and curvature parameters and for some redshift intervals.