There is no such thing as anti-matter or dark matter or quantum particles.
There is just matter with with negative mass, but it only interact with matter with positive mass through (weak) gravitation.
It's worse than that. Imagine that negative mass matter and positive mass matter works exactly like electrons charges. Positive mass attract positive mass. Negative mass attract negative mass. Positive and negative mass repel each other. Since we're made of positive mass… we can't observe negative mass matter as it literally flees from us.
So how does a negative mass object would appear to us?
Void.
The universe is a block of swiss cheese, the cheese is negative mass matter. The holes in it are positive mass matter.
Tadaa. All of the quantum "mysteries" solved with one answer.
Galaxies are spinning too fast to retain a cohesive form? And flat? Not anymore. They're squished down by negative matter.
There are "dwarf galaxies" too small to have the mass necessary to catch stars? No, it's just they're so far away their light starts getting squished down too.
There isn't anywhere near enough solar radiation and dust in the emptiness of space to justify the fact that actually measured (VS calculated) temperature in the shade of the solar system is 100°C higher that where it should? Well duh, it's convection from the not empty "void".
Black holes? Mass inverters, with no singularity, simply due to the geometrical shape of the universe.
The universe is still expanding? Yes and no, it's light that is slowing down.
Photons appears out of nowhere?
No they just SEEM to, they are traveling back and forth in time on a cycle (but that one is a bit more complicated to explain. There are limits to vulgarizing. But basically -m = -E/c², using pointcarré group you find that time reversal is energy reversal and thus mass reversal).
But since almost all physicians are beaten into shape by learning that Einsten is God and that his field equations (EFE) are some sort of description of physical reality, despite from is own admittance he discarded half of it as going by the day observations (of 1910's) and sought to create the cosmological constant (lambda) to account for a stable universe and one in which there couldn't be any matter with negative mass (and then openly said to DISREGARD IT after speaking to Hubble in the 1930'sand realizing that the universe seem to be expanding and is not fixed, therefore there was something very wrong with his original work).
But nope everyone continue to do quantum physics with that cosmological constant (they just said "well the value must be different", despite the fact that the entire concept is wrong) and that voluntary hobbled field equation despite the guy that wrote it saying there is something very wrong with it (but he never got around to fix it as he was working on something completely different by then).
Yet we keep spending billions trying to find shit that can be demonstratively and mathematically proven DON'T EXIST and are complete bullshit "particle we can't detect" but that quantum theorists theorize exist every-time they run into a math problem (whose source is the fucking field equation).
Back in the day Einstein though that having negative mass matter was impossible, because it "sounded" impossible.
Today quantum physics has 30 different particles that are 100% hypothetical and twice as much for which there is, with a big maybe, an indication they exist.
We've gone from disregarding weird things that sounded too weird, to make more sense, to inventing weird things to make more sense.
That has a name. One is called Cartesian logic, the other is called magical thinking.
But today if you go back to the original EFE and disregard the cosmological constant and write it accounting for negative mass matter… well you're gonna find out that there is no constant (which on the time scale of the universe makes a shitload of sense, for us it appears constant of course… but it isn't). That negative mass spread first during the big bang, that light speed varies (and is slowing down), etc, etc… and that most quantum "problems" brought by cosmological observation can be explained by a thus revised classical physic.
And that you're a fucking lunatic that will never be published.
No.
Again that's an error induced by the EFE. If you use dynamical system (and you NEED too since we know from observation that the universe is dynamic and not static) and you redo the math on the poincaré group (it's the works of Sourieau and Kirilov in the 70's), and account for the fact that if negative mass can exist then the universe isn't as a Riemannian manifold + a metric tensor but two (one positive and one negative) you're gonna get the exact opposite.
Again those maths aren't new it's 50 years old publications.
Bondi and Bonnor (in the 50's) created the runaway motion paradox by using an erroneous formula in the first place and tired to apply negative mass in an equation system that has already discarded it.
It's
1+a = 1+a. I don't the need (a) for an arbitrary reason.
1=1
Hey what happens if I add (a) again?
1=1+a
Well look like it's wrong I guess (a) can't exist then.
It's that basic a mistake and it's the last ~50 to 80 years of physics.
It's both.
Which is why it's a paradox and described as impossible.
And not at all because it's shoddy maths.