The university of Ottawa is challenging Dark matter and energy!
I know I am late to this, yet seeing the recent development has engaged me with this topic.
What are dark matter & dark energy?
Dark matter is matter said to not interact with the EM spectrum, therefore we cannot see it. It's thought to play a role in the BB model of the universe, where it plays a large role in expansion. When put in combination with string theoretical (and other dimensional theories), it proposes a habitat for supersymmetric particles (those in complement with our current SM particles), and perhaps a valley towards parallel universes. Extendedly, it's supported by gravitational lensing, as it provides a medium through which light would be slowed.
Dark energy, on the other hand, is energy said to have an overall effect on the universe, and so, would be repulsive, pushing the galaxies apart (resulting in expansion).
What is Gupta proposing instead?
Instead, Gupta proposes that over space-time natural forces weaken, leading to the redshift that is observed from distant galaxies, and the expansion to which we are already aware.
To explain this, Gupta proposes that photons 'shed' energy over their travel, therefore increasing their WL to the red side of the spectrum (TL). And that, if the universal constants differ over space-time (CCCs), by an immeasurable amount (thus far), it could provide evidence towards Gupta's theory.
I think, yet, it's too unsupported to not be skeptical. How does Gupta respond to the high speed of the rotation of galaxies. If there's no dark matter to hold galaxies together, why aren't they splitting apart? There's also skepticism in the amount by which the constants would vary, as there's no specific measure thus far. I do believe the idea of photons 'shedding' energy is an interesting concept though, yet I can see it easily fitting into a model where dark matter and energy do in fact exist.
