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GR: Fachverband Gravitation und Relativitätstheorie

GR 8: Poster Session

GR 8.6: Poster

Dienstag, 17. März 2015, 14:00–16:00, H 2033

The Question of Dark Energy — •Albrecht Giese — Taxusweg 15, 22605 Hamburg

Dark energy is considered to be one of the great mysteries in present-day physics. From measurements of the motion of supernovae type Ia, it is deduced that the universe is undergoing accelerated expansion. To explain this acceleration, it is assumed that the universe is filled with some type of ("dark") energy.

However, there are 2 very unspectacular explanations for the measurement.

Solution 1: The speed of light 'c' was higher in early times. This inserted into the Doppler equation for the determination of early speeds from red-shift yields higher speeds for early stars. So there is no acceleration.

Solution 2: From the present cosmological concept of inflation it follows that space was smaller in early times. This has caused (at constant 'c') higher frequencies for the eigenstates of the atoms, which in turn caused the frequency of spectral lines to be positioned towards 'blue' compared to now. So the resulting red-shift is higher than presently assumed and early stars have in fact been faster. No acceleration.

Further info: www.ag-physics.org/darkenergy