What is antimatter? How to understand it?

Antimatter is matter that is made up of antiparticles. All particles have antiparticles, and these antiparticles are characterized by their mass, lifetime, spin, and isospin being the same as the corresponding particles, but the quantum numbers such as charge, baryon number, lepton, singular number, etc., are the opposite.

For example, a hydrogen atom is made up of a negatively charged electron and a positively charged proton, while an antihydrogen atom is the opposite, consisting of a positively charged positron and a negatively charged antiproton. When matter and antimatter meet, they annihilate, releasing a large amount of energy.

Scientists believe that the creation of a large number of antihydrogen atoms will help verify the correctness of the CPT conservation assumption and the universality of the Standard Model of the universe. If it is found that antihydrogen atoms and hydrogen atoms are not exactly equivalent in physical laws, it will bring very important new enlightenment to some fundamental problems in physics and cosmology. For example, the Great Theory of the Universe holds that when the universe was born, an equal amount of matter and antimatter was created from nothingness.

But in the observed universe, matter is clearly absolutely dominant. The study of antihydrogen atoms may help to solve this mystery.

To put it simply, it's beyond the known world, invisible to the naked eye

Protons in the nucleus of antimatter are negatively charged, and when they meet positive matter, annihilation will occur, releasing a large amount of energy.

Dirac theoretically predicted that there are antiparticles in the world that are opposite to particles, and their charges are opposite to those of particles, and antiparticles make up antimatter.

The spin of antimatter with an electric charge opposite to that of positive matter.

Except for the quality, everything else is the opposite.

Refers to a substance in which the particles that make up a substance have an opposite charge to a normal particle.

I've seen it in science fiction **, which refers to something in another dimension, contrary to properties such as matter, and has superhuman abilities.

What exactly is antimatter? Scientists** went so far as to say that the universe might be destroyed.

Antimatter is the anti-state of normal matter. When positive and antimatter meet, the two sides annihilate each other and cancel each other, occurring ** and generating a huge amount of energy.

The concept of antiparticles originally comes from the negative energy solution of the Dirac equation. The Dirac equation has both positive and negative energy solutions, and it is believed that the positive energy solution is an ordinary fermion, and the transition from the positive energy state to the negative energy state will release a photon with an energy equivalent to twice the mass of the fermion.

In this way, the negative energy solution can also be interpreted as a particle, and the above transition process can be interpreted as the annihilation of negative energy particles and positive energy particles to form photons, so the negative energy particles are called antiparticles. However, due to the limitations of the times, there was no concept of quantum field theory at that time, and the relativistic Dirac equation alone was not enough to describe the generation and annihilation of particles.

1.Antimatter is matter that is made up of antiparticles.

2.All particles have antiparticles, and these antiparticles are characterized by their mass, lifetime, spin, isospin, and corresponding particles being the same, but the quantum numbers such as charge, baryon, lepton, singularity, etc., are opposite.

3.For example, a hydrogen atom is made up of a negatively charged electron and a positively charged proton, while an antihydrogen atom is the opposite, consisting of a positively charged positron and a negatively charged antiproton.

4.The fabrication of a large number of antihydrogen atoms is helpful to verify the correctness of the open-excitation assumption of CPT conservation and the universality of the Standard Model of the universe.

5.If it is found that antihydrogen atoms and hydrogen atoms are not exactly equal in physical laws, it will bring very important new enlightenment to some fundamental problems in physics and cosmology.

6.For example, the cosmological theory holds that when the universe was born, an equal amount of matter and antimatter was produced from nothingness.