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GR: Fachverband Gravitation und Relativitätstheorie

GR 10: Foundations and Alternatives II

GR 10.2: Talk

Wednesday, March 22, 2023, 16:20–16:40, ZEU/0255

A Physically Founded and Exact Model of Dark Energy — •Hans-Otto Carmesin — Gymn. Athenaeum, Harsefelder Str. 40, 21680 Stade — Studienseminar Stade, Bahnhofstr. 5, 21682 Stade — Universität Bremen, Fachbereich 1, Postfach 330440, 28334 Bremen

While Newton proposed static space, Einstein used his general relativity, GR, and derived a possible dynamic expansion of space [1]. Hubble observed it [2]. When Perlmutter [3] discovered the energy density u_Λ of cosmological vacuum, dark energy, an essential property of space beyond GR had been discovered. So, what is dark energy? Here, I present a physically founded model of the dark energy u_Λ [4,5]. I provide an exact solution of that model, and I derive the dark energy u_{Λ , model}. It is in precise accordance with the observed value u_{Λ , obs}. Thereby, I do not apply any fit parameter. Using that model, I explain the H₀-tension [6]. Lit.: [2] Hubble, E. (1929): A relation between distance and radial velocity among extra-galactic nebulae. Proc. of National Acad. of Sciences, 15, pp. 168-173. [3] Perlmutter, S. et al. (1998): Discovery of a Supernova Explosion at Half the Age of the Universe. Nature, 391, pp. 51-54. [4] Carmesin, H.-O. (March 2021): Quanta of Spacetime Explain Observations, Dark Energy, Graviton and Nonlocality. Berlin: Verlag Dr. Köster. [5] Carmesin, H.-O. (December 2022): Unification of Spacetime, Gravity and Quanta. Berlin: Verlag Dr. Köster. [6] Riess, A. et al. (2022): A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s⁻¹ Mpc⁻¹ Uncertainty from the Hubble Space Telescope and the SHOES Team. The Astrophys. J. Lett., 934:L7, pp. 1 - 52.