Very interesting stuff, Lupe. There's long been bits of speculation from honest physicists about the possibility that the laws of physics may not be a constant in other parts of the universe, or at other times in the universe.

The difficulty of course is that until we have a proposed mechanism for that inconsistency, it's impossible to test the idea.

These days I'm not well read enough on the newest papers to know if this proposal is unique, but at least for me, it's the first time I've seen a proposed mechanism to support the idea of changing dynamics/laws in different parts/times of the universe.

I am surprised to not see any references in the paper to dark energy, which according to current estimates is a bit less than 70% of the composition of the universe. I mention this because dark energy does not appear to dilute as the universe expands, while one of the fundamental elements of this paper is that leptonic matter (electrons, muons, taus) is decreasing in mass.

Even more interesting to me is that this mass reduction is not occurring with baryonic matter.

I'll be curious to see if this paper gains any traction. This information is well outside my field and I certainly can't grasp the intricacies of the information. But there's a pull here for me in that I've long wondered if we can safely assume that the laws of physics have indeed been constant across the universe and throughout its lifetime.

What we do know is that the current cosmological principle fails to predict observable phenomena. The paper actually calls out a couple of them ("The Big Ring" & "The Giant Arc), both of which are excellent reading for those that are curious. Both structures are enormous in size, are approximately 9 billion light years away (and consequently 9 billion years old at our current viewing time) and fascinating to read about.