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Article

The Hubble Tension, the M Crisis of Late Time H(z) Deformation Models and the Reconstruction of Quintessence Lagrangians †

Department of Physics, University of Ioannina, 45110 Ioannina, Greece
*
Author to whom correspondence should be addressed.
This paper is an extended version from the proceeding paper: George Alestas, George V. Kraniotis and Leandros Perivolaropoulos. An overview of nonstandard signals in cosmological data. In Proceedings of the 1st Electronic Conference on Universe, online, 22–28 February 2021.
Academic Editor: Lijing Shao
Universe 2021, 7(8), 300; https://doi.org/10.3390/universe7080300
Received: 8 July 2021 / Revised: 7 August 2021 / Accepted: 8 August 2021 / Published: 13 August 2021
We present a detailed and pedagogical analysis of recent cosmological data, including CMB, BAO, SnIa and the recent local measurement of H0. We thus obtain constraints on the parameters of these standard dark energy parameterizations, including ΛCDM, and H(z) deformation models such as wCDM (constant equation of state w of dark energy), and the CPL model (corresponding to the evolving dark energy equation-of-state parameter w(z)=w0+waz1+z). The fitted parameters include the dark matter density Ω0m, the SnIa absolute magnitude M, the Hubble constant H0 and the dark energy parameters (e.g., w for wCDM). All models considered lead to a best-fit value of M that is inconsistent with the locally determined value obtained by Cepheid calibrators (M tension). We then use the best-fit dark energy parameters to reconstruct the quintessence Lagrangian that would be able to reproduce these best-fit parameterizations. Due to the derived late phantom behavior of the best-fit dark energy equation-of-state parameter w(z), the reconstructed quintessence models have a negative kinetic term and are therefore plagued with instabilities. View Full-Text
Keywords: dark energy; LCDM; wCDM; CPL; cosmological data; reconstruction dark energy; LCDM; wCDM; CPL; cosmological data; reconstruction
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MDPI and ACS Style

Theodoropoulos, A.; Perivolaropoulos, L. The Hubble Tension, the M Crisis of Late Time H(z) Deformation Models and the Reconstruction of Quintessence Lagrangians. Universe 2021, 7, 300. https://doi.org/10.3390/universe7080300

AMA Style

Theodoropoulos A, Perivolaropoulos L. The Hubble Tension, the M Crisis of Late Time H(z) Deformation Models and the Reconstruction of Quintessence Lagrangians. Universe. 2021; 7(8):300. https://doi.org/10.3390/universe7080300

Chicago/Turabian Style

Theodoropoulos, Anastasios, and Leandros Perivolaropoulos. 2021. "The Hubble Tension, the M Crisis of Late Time H(z) Deformation Models and the Reconstruction of Quintessence Lagrangians" Universe 7, no. 8: 300. https://doi.org/10.3390/universe7080300

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