An article posted in May 2021 by New Scientist has exposed the eccentric ideas of Julian Barbour, a quantum gravity enthusiast and former University of Oxford professor, describing Big Bang not as the origin of time, but as the midpoint from which the universe branches off in opposite directions. However, other theoretical physicists have twisted the hypothesis, as if they were compiling a ‘fossil’ with another instruction manual.
Now, experts from the Perimeter Institute for Theoretical Physics (Canada) and the School of Physics and Astronomy at the University of Manchester (UK) suggest that there was a universe before the Big Bang that behaved like ‘antiuniverso’ known to us, the model that would propose an “elegant and verifiable” explanation for dark matter.
Scientists have been waiting for the article’s approval since 2018, when it was uploaded to the platform arxiv.org. After all stages of review, the manuscript can be read in the journal History of Physics.
Conception of two parallel universes. Image: Futurism
For them, we must think about the symmetry that is preserved in the laws of the cosmos. Three in particular must be taken into account: charge, because if the particle is changed by another opposite charge, the same interaction is obtained; parity or award; and time because if the interaction is run backwards it won’t be changed.
This CPT symmetry—receiving it’s name from the components mentioned above—is called “fundamental” and specialists have yet to identify a breach when observed at the same time in a receding state, a virtue that gives the hypothesis a plausible face.
Then, the view we take of the universe should be incomplete, he will be short of the other half. And here’s what’s interesting.
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“The universe before the ‘explosion’ and the universe after the ‘explosion’ can be seen as a universal/antiuniverse pair, emerges directly into the radiation-dominated heat era we observed in the past. This, in turn, leads to a very economical explanation of cosmological dark mattersaid Latham Boyle, Kiera Finn and Neil Turok, three of the study’s authors.
The theoretical model shows that 70% of the universe consists of dark energy and 25% of dark matter, represented in the image in blue. Photo: NASA/ESA
Dark matter, according to NASA’s Space Place, makes up a quarter of the universe, or about 27%.
“Overall, dark energy and dark matter makes up 95% of the universe. That’s almost the entire universe. This means that what we know and understand is only 5%,” said the website.
Even though dark matter interacts with gravity – the effect is seen with movement galaxy—, the same is not the case with electromagnetism, the branch of physics that describes charged particles with electric and magnetic fields.
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The symmetry of the CPT leads us to think of other universes balancing us with opposite charges. But, what implications are inferred from the twin cosmos? Scientists practice several answers.
Although the explanation of the unique universe tells us that there was a period of inflation in which space-time expanded at an accelerated rate during the first moments of its appearance, theoretical physicists believe that this picture is “blurred”, therefore, there is room for something else. current considerations.
On the other hand, if the CPT symmetry is included in the equation, additional neutrinos must be added to the formula for the known cosmos.
IceCube Laboratory in Antarctica. Below is a neutrino telescope detector. Photo: IceCube NSF
That neutrino they are elementary or subatomic particles that spin to the left. In a note to the BBC, Peruvian neutrino physicist Carlos Alberto Argüelles, a researcher at the Massachusetts Institute of Technology (MIT), asserts that these “messengers” provide us with information from sectors that are otherwise impossible to access. “The most abundant in the universe are photons, that is, particles of light. The second is the neutrino,” he added.
Since other types of particles spin in both directions, it would be unreasonable to infer the existence of other neutrinos rotating to the right. And a left-handed person will only be detected by its influence on gravity, much like dark matter!
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