How to understand string theory? What is string theory

The universe is a unity of space, time, matter, and energy. It is the sum of all space and time. According to scientists, as the fourth category of parallel universes, the universe based on the M theory is completely different from the universe we are in, its physical properties and quantum states are different, and we cannot even express such a universe with intuitive images.

M-theory is an extension of string theory, while superstring theory develops from string theory. The difference between string theory and traditional elementary particle theory is that it does not regard an elementary particle as a point particle, but as a one-dimensional string, which obviously completely subverts all previous cosmological theories.

The famous Venezzegjano formula in string theory can be understood as the scattering amplitude of strings and strings, on the basis of which parallel universes are built with an unimaginable degree of openness.

In quantum mechanics, waves and particles are considered to be two different manifestations of the same phenomenon, string theory holds that each vibrational mode corresponds to a particle, the vibrational frequency of a particular string determines the energy and mass of the particle, and the different vibrational modes of a string can form elementary particles as we know them today. For example, according to string theory, particles are considered to be one-dimensional strings of length on the Planck scale, and after the introduction of fermions coordinates, scientists proposed superstring theory. The formation of superstring theory means that such parallel universes are not space-time composed of particles and fields, and the universe is not only four-dimensional space-time, but multi-dimensional.

The 10-dimensional superstring theory avoids the renormalization problem encountered when quantum mechanics merges with general relativity, and the universe is a unity of space, time, matter, and energy. It is the sum of all space and time. According to scientists, as the fourth category of parallel universes, the universe based on the M theory is completely different from the universe we are in, its physical properties and quantum states are different, and we cannot even express such a universe with intuitive images.

M-theory is an extension of string theory, while superstring theory develops from string theory. The difference between string theory and traditional elementary particle theory is that it does not regard an elementary particle as a point particle, but as a one-dimensional string, which obviously completely subverts all previous cosmological theories.

The visual limit is a bit rigid for the general reader, but it can't erase the Chinese New Year's Eve Chinese New Year's Eve Liu's elaborate definition of the universe.

However, those who read carefully can or may have discovered a more concealed and densely concealed mystery, that is, the universe in "The Three-Body Problem - Immortality of the Dead God" can actually amazingly interpret the world of Rogge's address in "Blasphemy"!

Okay, that's a bit appalling, but the whole idea of the world in these two books is actually surprisingly incompatible.

Categories: Education Science >> Science and Technology.

Problem description: String theory is a physical theory, please tell me, what is string theory?

Analysis: String theory: A theory that wants to describe all phenomena.

Einstein spent the last 30 years of his life searching for a unified field theory—a theory that could describe all forces in nature within a single, all-encompassing, harmonious mathematical framework. In fact, he was looking for a theory that could describe all phenomena. However, Einstein failed to fulfill his dream.

Today, a significant number of physicists believe that they have discovered a framework that has the potential to stitch this knowledge together into a seamless whole—a single theory, which is string theory.

One of the basic ideas of string theory is that the basic units of nature are not particles such as electrons, photons, neutrinos, quarks, etc., but that what looks like elementary particles is actually a closed circle of very small strings (called closed strings or closed strings), and the different vibrations and motions of the closed strings give these different elementary particles. Thus, string theory derives the infinite variation and complexity of the universe from a few very basic and simple units. In string theory, one can naturally get gauge symmetry, supersymmetry, and gravity, and these principles are either imposed in the original Standard Model or conflict with quantum theory, while in string theory, they all naturally appear and are harmoniously unified, and they are also mutually necessary and unique.

We can better explain through some books and some Internet inquiries that we should apply for some cram schools and consult study books, so that we can study well.

Some principles of force and mathematical theories should be selected to elaborate. You should read more about this knowledge in normal times, and you should also increase your interest in this knowledge.

Over the past 70 years, scientists have come up with many theories to become ambassadors, but most of these theories have serious mathematical problems. For example, sometimes the outcome is negative or more than 100% probability. Based on one of these models, tachyon particles are calculated, which scientists call more cult.

However, since the early 80s of the 20th century, many physicists have been looking for interesting plans for the future. According to the Standard Model, the particles are modified. That is, no matter how scientists probe the internal structure of particles, they are not a small "point" of energy that exhibits all the properties of particles:

Mass, charge, and rotation. This can lead to serious math problems. Imagine putting the mass and energy of an electron into a smaller sphere.

Eventually, it will become an infinite point in space. At this point, its mass and energy density becomes infinity. This infinite encounter makes any calculation involving mass and energy density unstoppable.

So, about 30 years ago, physicists came up with a solution that could replace the internal shape of particles, like closed rings of energy, without disappearing.

String theory should be composed of molecular atoms and subatoms, but in fact, if we divide it, the electron quark microns and the like that we know should all belong to strings, and the strings are very small and cannot be seen by the naked eye!

It mainly talks about how some small particles and matter survive.

He is a conclusion that quantum and mechanics are compatible together.

A string is a substance imagined by physicists, and the form of this substance may be a closed ring, which can oscillate in a string style, hence the name string. The physical concept of strings was proposed by Vilenkin and others in 1981, who believed that the power generated by the universe should form countless thin and long tubes with high energy concentration. This kind of pipe is called the U string.

The properties that theorists have assigned to strings are extraordinary. It's kind of spider silk, but it's much thinner than an atom. You can walk through it and never notice it.

However, a centimeter of string is larger than the mass of the entire Himalayas, and the mass is variable, depending entirely on its tension: the longer it is pulled and the tighter it is taut, the greater the mass. It is also extremely strong.

The activity of strings is closely related to the expansion of its nearby celestial bodies and the universe.

Yuxian is a hypothetical one-dimensional topological defect in the fabric of space-time. The cosmic chord is hypothesized when the first phase of change occurs in different regions of space-time, and the boundaries of the domain are met between two regions. Another peculiar property that theorists have given to the cosmic strings is:

Either stretch to infinity or form a closed, endless, loop.

String theory, or string theory, is a theory in theoretical physics. One of the basic ideas of string theory is that the basic units of nature are not particles such as electrons, photons, neutrinos, and quarks. These particle-looking things are actually closed circles of tiny, tiny strings (called closed strings or closed strings), and the different vibrations and movements of the closed strings produce a variety of different elementary particles.

Although the scale of strings in string theory is very small, the basic principles that manipulate their properties predict the existence of several large-scale film-like objects, the latter being shortened"membranes".Intuitively speaking, the cosmic space we live in may be a three-dimensional membrane in the nine-dimensional space. String theory is now the most promising theory that unifies the elementary particles and the four interacting forces in nature.

Discovered by Gabriele Veneziano. 62616964757a686964616fe78988e69d8331333365656635

The rudiments of string theory were discovered in 1968 by Gabriele Veneziano . He was looking for a mathematical formula that could describe the strong forces in the nucleus of an atom, and then found the 200-year-old Euler formula in an old mathematical book's function), which can successfully describe the strong force of the solution he requires.

However, it was not long before Leonard Susskind discovered this formula as a small elastic "segment" that twisted and jitted like a rubber band, which later developed the "string theory".

The best theory of strong interaction is still field theory, the most perfect field theory: quantum chromodynamics. In a later chapter, we will find that string theory and quantum chromodynamics are actually very subtle, if not one.