The Dirac Sea is simply a sea of negative energy particles composed of zero point energy of quantum vacuum. Although these particles are unobservable, they are by no means illusory. If enough energy is used, they can form. Where there is matter, there is Dirac's ocean. Imagine the observed universe as if it were floating on its surface.

Dirac equation, the relativistic quantum mechanical equation of electrons, can solve the negative energy level of free electrons. According to the principle of minimum energy, all electrons in the material world should jump to negative energy level. Dirac explained that these negative energy levels have been occupied by electrons. According to the incompatibility principle, each energy level can only accommodate two electrons with opposite spins, so the electrons we observe cannot jump to the negative energy level. The material world seems to be immersed in the ocean of negative energy electrons, which is Dirac's ocean. When an electron is excited from a negative energy level, the hole left is a particle with the same mass and opposite charge, which is the prediction of the first antiparticle-positron. Dirac's sea is also a description of the existence of positrons.

One of paul dirac's achievements is that he put forward the theory of electrons in electric and magnetic fields.

Field) movement theory, electrons must have its antimatter; 1932, scientist carl anderson first discovered the existence of positrons, that is, electrons with positive charges. In people's later research, the existence of antimatter has also been confirmed.

What is the conclusion? Let's think about it, why doesn't antimatter exist in our universe? Some scientists think this is because it happened in the universe (maybe the big bang? ), the uneven distribution of matter and antimatter. For our universe, matter is much more than antimatter. Because the collision of positive and negative matter will disappear, only energy will remain, so when there are more matter than antimatter, only positive matter will remain. However, this only refers to our universe. What about other universes? As you can imagine, because the distribution of matter and antimatter is different when the universe was born, it is not surprising that there will be an antimatter universe! If the weight of matter and antimatter is one to one when the universe is created, there may also be a universe with only energy. Of course, there are other possibilities in the universe that we can't understand.

In short, the universe was originally composed of countless matter (electrons) and antimatter (positrons). The countless pairs of positive and negative electrons produced by the annihilation of matter and antimatter are the so-called Dirac Sea, which constitutes the foundation of this world. Because there are more matter than antimatter in the universe, the matter that has not been annihilated constitutes the world we live in now.

Dirac Sea, a space that can only be described by complex mathematics, is more likely to be other universes.

Okay？