Is there a mirror universe

Can there be a mirrored version of our world where everything is reversed and everyone has a kind of antithesis? How much you need to bend the laws of physics in a knot to make it happen? One of the biggest mysteries in cosmology is why the universe is mostly material and not antimatter.

During the Big Bang was formed almost equal amounts of matter and antimatter, and then they annihilate. Are almost equal. Because we observe the Universe from matter.

But if we can be the stars of antimatter? With planets of antimatter in orbit. Maybe if we can exist in the mirror universe, which functions like our normal Universe, but in which everything is made of antimatter? Does it evil? Can live in it people, children and women of antimatter, beautiful? Fight these people with swords, wearing gold and diamonds?

Okay, drop these fantasies. The existence of antimatter was first suggested in 1928 by Paul Dirac who realized that one of the consequences of quantum mechanics is the existence of electrons with positive rather than negative charge. They were discovered by Carl Anderson, only 4 years later and was called "positrons". Thank you for not "directory", this name is more suitable for giant Japanese robot.

These antiparticles are born as a result of collision of high-energy particles that occur naturally in the Universe, or unnatural in our particle accelerators. We can even witness the annihilation, when matter and antimatter collide with each other.

Physicists have discovered a number of antiparticles. Antiprotons, antineutrons, antihydrogen, entirely. However, something more yet. However, the big question is: what would happen if the pendulum of the Universe has swung the other way? What would happen if the universe consisted mostly of antimatter? Would it work? Would we have stars, planets, people?

When physicists replace matter with antimatter in their equations, they call it charge conjugation (C-conversion). But it turned out that if you replace the charges of the particles in the Universe, it will not work as well as our good old universe.

To solve this problem, physicists imagined the consequences of the existence of this mirror Universe where all particles would behave as mirror copies of themselves. It's the opposite. Spin, charge, velocity, and principles of action. Inversion. Will this work?

Again, the answer is no. Almost must, but the weak nuclear force which governs nuclear decay, there is a tendency to violate this idea of combined parity. In the mirror Universe, the weak nuclear force works.

Symmetry parity, i.e. invariance of the equations of physics relative to this mirror-inversion observed for all reactions associated with electromagnetism and strong interactions. What if you pay the charge and parity at the same time? Physicists call this CP-symmetry, combined parity, the product of two symmetries.

In a curious experiment conducted by James Kronina and Val Fitch in 1964, scientists have demonstrated that there is a mirror anti-matter Universe, our physical laws do not work. This experiment has brought scientists a Nobel prize in 1980.

But physicists have another ACE in the hole. Turns out that if you reverse time and make all of the antimatter, then glancing in the mirror, you will get true symmetry. All physical laws will work, and you get a universe that looks exactly like our own.

It turns out that we could live in a mirror Universe, if time were reversed, and the charge of each particle was converted. And it would be indistinguishable from our world. And if so, where is the guarantee that we do not live in the mirror Universe? published

Source: hi-news.ru