Is "string theory" the best theory to unravel the truth of the universe?

When it comes to topics about the universe, often "String theoryI hear the word "what is that substance" is not well known. A movie that explains such 'string theory' is published on YouTube.

String Theory Explained - What is The True Nature of Reality?


Because of wanting to know the truth of the universe, human beings have considered all kinds of theory from long ago.


Human beings have examined various theories in the long history and examined, "I have this theory seems to be correct", "I'm wrong this theory is done" has been selected. However, it tends to be more difficult and complicated as the theory that is deemed right.


Although "string theory" is also supported by many scholars, it is a very complex and misleading theory. So, how did "string theory" come out?


Researchers in the natural sciences looked into the very microscopic world with magnifying glasses and microscopes to see the essence of things.


Then, the world knows that it is made of small creatures that are invisible to the naked eye and a regular molecular structure ......


Finally I arrived at the existence of "atoms" that make up the molecule. Many people thought that "atom is the constituent unit of the smallest world", but by hitting atom and atom, it revealed existence of smaller constituent unit.


that is"Elementary particle". However, the problem in studying elementary particles is that "elementary particles are so small that they can not be seen with any sophisticated microscope".


When we see things, "light" is needed. Light hits the object as waves and reflects ... ...


Through the eyes, the image is projected on the retina and sensed as an image in the brain. People can not see things without the process of light hitting objects and reflecting them into the eyes of people.


Most substances can reflect light, but elementary particles are too small so that ordinary light will pass through without being reflected by elementary particles.


In order to avoid this, it is only necessary to irradiate a strong light beam that compressed the wave of light, but if you apply powerful light to elementary particles, it will change elementary particles by the power of light. In other words, it is impossible to observe elementary particles in principle.


This principle is "Heisenberg's uncertainty principle"It is the basis of quantum physics.


So, in order to science the subjects that "like to exist particles are known but can not be observed", human beings have used the approach of establishing "mathematical hypotheses".


The hypothesis used to deal with the behavior of elementary particles is "Quantum field theory"is. This model assumes that elementary particles are one point in space This model solves many problems and the standard model of quantum physics is built on the field quantum theory.


Particles are not actually spatial points, but by thinking like that, we can solve some problems about the universe, and learning has greatly advanced.


Used for nanoscale chemical technologyQuantum solventAnd of cancerProton beam therapy, Linear motor cars and other useful technologies that are useful in the real world, the hypothesis that "elementary particles are points in space" is not used as a reality.


However, considering elementary particles only by field quantum theory, the big problem of "gravity" is blocked.


In quantum mechanics, elementary particles exert various forces on objects ... ...


EinsteinofGeneral relativityGravity is a completely different thing from the force other than gravity that exists in the universe.


If elementary particles are actors, gravity can be said to be the stage.


Gravity is a geometric existence that needs to be described with absolute accuracy, but in the world of quantum mechanics it is impossible to observe gravity with absolute accuracy. If gravity is intact, it is not handled in the world of quantum physics.


When bringing the concept of gravity into the world of quantum physics including elementary particles, all ideas will collapse.


However, if we can combine gravity and the standard model of quantum physics, there is no doubt that it will be a great help to elucidate the mystery of the universe. So the scientists from around the world twisted their heads and searched for a new model, "Hypothesis of new elementary particles replacing the point?"


So, a scholar who thought "Is not it" string "that can describe more complex information than a point?" Appeared.


And it was born that "string theory" treats elementary particles as strings.


Using string theory, it is possible to distinguish multiple elementary particles as a state of multiple strings with different vibrations. If each elementary particle has an individual vibration, it can explain all the force including gravity.


"The string theory is greatly overridden as" all strings in the universe can be unified by "string theory"! "


However, unfortunately there are shortcomings in string theory.


The universe in which we live works by 4 dimensions adding one dimension to three or three dimensions ... ...


To explain the string theory, how ten dimensions are necessary.


Therefore, scientists thinking of string theory build a theory on a model in 10 dimensions which does not exist in reality.


Efforts have been made to bring string theory from the 10 dimensional world to the 4 dimensional existing in our real world, but no one has succeeded at the time of writing the article.


Do Although science has evolved by repeated experiments to demonstrate hypothesis and it, because string theory is not in any way can prove whether correct or in an experiment, "is there anything of value in just a hypothesis that can not be proven in the experiment? It is also a fact that is often thought.


However, physics is made up of mathematics, and considering that string theory works effectively in at least mathematical fields, string theory is useful at a certain level.


For example, even if a person wanting to build a huge cruise ship has a small boat's plan, it is impossible to create a cruise ship as it is from the design of the small boat.


Because the engine, materials and structure are totally different.


However, this is also a very fundamental point of "floating in water" if the viewpoint is changed, both cruise ships and small boats share.


Likewise, string theory may not be directly useful for solving the big problem that quantum physicists would like to finally clarify, but it is possible to answer at least some problems related to gravity.


In the black hole that has bothered scientists for decadesParadox of informationThe problem of strings, such as the problem of helping solve difficult problems.


Although string theory is not a universal theory which unravels all truths, it can be used as a very useful tool for quantum physicists.


Although it is a string theory that exists only at the theoretical level, there is a possibility that the day will eventually come to the end of unraveling the mystery of the universe by utilizing it well, and elucidating all truths.