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DD: Fachverband Didaktik der Physik

DD 38: Astronomie – Poster

DD 38.3: Poster

Mittwoch, 28. Februar 2024, 14:00–15:00, ELP 6: Foyer

Students Learn to Derive the Energy Density of Volume — •Hans-Otto Carmesin — Athenaeum, Stade — Studienseminar Stade — Universität Bremen, Fachbereich 1

Volume is essential in everyday live - it basically describes the amount of space. However, Einstein (1917) proposed a cosmological constant Λ, which seems to assign an energy density to space, the dark energy. In fact, Perlmutter (1998) discovered the acceleration of the expansion of the universe, and this acceleration provides a value of Λ, though Einstein was unable to predict the value of Λ with his ingenious theory of general relativity. But here, we show how students can derive the energy density u_vol of volume and the theoretical value of the cosmological constant Λ_theo in an elegant and exact manner: Based on the usual algebraic structure of general relativity, the dynamics of volume are analyzed & derived. These dynamics are realistic, as they can be measured. They are meaningful, as they imply the process of formation of volume as well as the density of volume. Thereby, the derived values of u_vol and Λ_theo are in precise accordance with observation and fully derived from physical principles [1-3]. Experiences from teaching in research clubs and general study courses at a university are presented. [1] Carmesin, H.-O. (2021): Quanta of Spacetime Explain Observations, Dark Energy, Graviton and Nonlocality. Berlin: Verlag Dr. Köster. [2] Carmesin, H.-O. (2023): Geometrical and Exact Unification of Spacetime, Gravity and Quanta. Berlin: Verlag Dr. Köster. [3] More info: https://www.researchgate.net/profile/Hans-Otto-Carmesin

Keywords: Relativity; Gravity; Quantum Physics; Dark Energy; Foundations of Physics