According to a strange new notion, there may be an anti-universe in which time goes backward in time before the Big Bang. The research suggests that basic symmetry, which is maintained by physical interactions in nature, be extended to the whole universe and used to explain dark matter.

According to a strange new notion, there may be an anti-universe in which time goes backwards from the Big Bang. Its presence might also explain the existence of dark matter in our own universe.

The hypothesis is based on the rule of CPT theory, which states that charge, parity, and time are symmetrical and that if they are flipped in any physical interaction, the result would be the same.

The CPT symmetry is the name given to this basic symmetry. Most physical interactions follow most of these symmetries, and a violation of all of these symmetries at the same time has never been seen.

Their new research, which was just approved for publication in the journal Annals of Physics, seeks to expand the use of symmetry beyond physical interactions (universe components) to the whole universe itself. Because all physical interactions maintain this symmetry, the presence of a reverse world with all opposing charges that is reversed in the mirror and goes backward in time should balance out our own universe.

Counting dark matter

According to Live Science, a consequence of this universe’s existence might help explain dark matter. Neutrinos are classified into three types: electron-neutrinos, muon-neutrinos, and tau-neutrinos, all of which spin to the left (relative to their motion).

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Because all other particles are known to have both left and right spins, physicists have long speculated about the possibility of right-spinning neutrinos. The existence of these theorized neutrinos that spin to the right would be required in a mirror-image world. While these enigmatic subatomic particles would be imperceptible to physical tests, they would interact with the rest of the cosmos through the transcendental force of gravity.

The behavior would be comparable to that of dark matter. If this anti-world existed, it would indicate the existence of right-spinning neutrinos in our universe, which would be sufficient to explain dark matter.

Anti-universe predictions from scientists

Because it existed before the Big Bang, this mirror-image world would be unreachable. Nonetheless, scientists may put the notion to the test.

In contrast to electrons, whose antiparticles are positrons, they expect that left-spinning neutrinos will likewise be their own antiparticles. Scientists are still unsure if neutrinos have this property. These subatomic particles are referred to as

Furthermore, one of these new neutrinos should have no mass. If scientists can definitively measure their masses, which are yet unknown, and one of the species turns out to be massless, the hypothesis will be supported.

Finally, in the CPT-mirror universe model, the cosmos expands on its own and fills up with particles spontaneously. Inflation, according to physicists, had such a profound influence on space-time that it inundated the cosmos with gravitational waves. Several studies are being conducted to confirm the existence of these primordial gravitational waves, and if they are discovered to be false, a mirror-image universe will gain a strong theoretical basis.

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