All Posts Tagged Tag: ‘gravity’

The plot shows the Planck mass in D dimensions The six straight lines in white (d = 1, . . . , 6) are the graphical representation for the extra dimensions beyond the 4 established dimensions. D = 6 corresponds to the case of superstring (supersymmetry) that is formulated in 10 dimensions. The most striking results is that none of the white lines d = 1, ..., 6 intersect the green areas representing solutions for the hierarchy problem where the weak force and gravity are unified. Therefore, higher dimensions are not a solution. © 2017 Hauser and Dröscher

Recap of Gravity Beyond Einstein? Part I

In Gravity Beyond Einstein?  Part I: Physics and the Trouble with Experiments, Hauser and Dröscher review the latest experimental results in quantum physics and astrophysics, pointing out how unfulfilled predictions and contradicting experimental results have repercussions on the advanced physical theories that go beyond both the standard model of particle physics and cosmology. I have previously made reference to Part …

Credit: APS/Alan Stonebraker; galaxy images from STScI/AURA, NASA, ESA, and the Hubble Heritage Team

Gravity Beyond Einstein

It is interesting that in recent months two new theories have been proposed that run counter to conventional theories of dark matter that depend upon exotic baryonic matter. One such paper on dark matter has arisen from M-Theory, suggesting that dark matter is not a particle in our spacetime but rather is in a hidden sector.  B.S. Acharaya, et al. in …

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