(ORDO NEWS) — Scientists suggest that our universe has a “mirror twin” or “anti-universe” where time goes backwards from the Big Bang.
A recently published study by an international team of theoretical physicists supports the concept of the existence of such an “anti-universe” – a theory that could also help explain the existence of dark matter , the mysterious stuff that fills our universe.
The theory, which will soon be published in the peer-reviewed scientific journal Annals of Physics, is based on what physicists call the three fundamental symmetries in nature.
In the Standard Model of particle physics, these are:
- Charge, because changing the charge of a particle in a given interaction results in an equal and opposite charge;
- Parity, because the mirror image of the interaction of particles will look the same as in the case of a normal interaction;
- Time, because the interactions that occur in the opposite direction in time look the same as in the case of the normal course of time.
Scientists say that these three fundamental symmetries suggest the existence of a mirror universe that would be the complete opposite of ours; it would be filled with oppositely charged and mirror particles moving backwards in time.
The theory is also capable of shedding light on dark matter, which is said to make up 95% of our universe, but we fail to fix it.
In this anti-universe, dark matter will consist primarily of new types of neutrinos, extremely high-energy, low-density subatomic particles that carry neither positive nor negative charge.
Points out, there are three known types of neutrinos that are “left-handed”, meaning that they spin left, while all other known particles have both left-handed and right-handed variations. This could mean that there are “right-handed” neutrinos in the anti-universe that we cannot detect.
The researchers add that these right-handed neutrinos are most likely invisible, but they will still affect the rest of the universe through gravitational interactions.
Physicists argue that this is also how we understand dark matter, which we cannot see, but are aware of its presence, because it, too, interacts with the rest of the universe only through gravity.
The article explains that if symmetry exists everywhere, then this would require right-handed neutrinos to be as abundant as their left-handed counterparts, which in turn would be sufficient to explain the nature of dark matter.
We are still far from understanding what dark matter is. But all of our many studies may lead us to shocking discoveries, including an “inverted universe” that moves backwards in time.
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