An Alternate Explanation for Dark Matter and Dark Energy based on Spacetime Surface Tension

A mechanical model has been introduced at prior conferences for describing spacetime with surface tension. In this presentation, the model is applied to cosmology. It is shown that the stress-energy tensor with surface tension can be mathematically rearranged to provide components resembling dark matter and dark energy. The model is used to predict stellar velocity and compared with rotation curves for 15 galaxies. Model predictions are shown to match initial slope, shape, and distant flatness of measured rotation curves. In order to provide this match, mass to light ratios must be assumed that are much lower than previously thought and galaxy luminosity has to be approximately proportionate to the square of galactic mass. When this proportion is reinserted into the model, the Tully-Fisher relation is derived. Dark matter and dark energy are postulated to be the cosmological effects of surface tension of spacetime.