What exists between Strings in String Theory?

In summary: It is based on the assumption that physical reality is composed of tiny fields that interact with each other. Matter and energy are just manifestations of these fields. There is no physical space between strings--only a ten-dimensionalimensional space.
  • #1
icantevenn
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Hello,
I am new to this.
As I understand it, the difference between the quantum field theory and string theory is that in the former, physical field is considered as the fundamental reality, while in the latter it is believed that everything comes out of strings. My question is, by everything do we mean matter and energy? What about space? What exists between two strings, for instance? Field?
 
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  • #2
In perturbative string theory, between strings is a flat 10-dimensional spacetime. But perturbative string theory is not a full story. A full answer requires non-perturbative string theory. Unfortunately, nobody knows what non-perturbative string theory really is.
 
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  • #3
Demystifier said:
In perturbative string theory, between strings is a flat 10-dimensional spacetime. But perturbative string theory is not a full story. A full answer requires non-perturbative string theory. Unfortunately, nobody knows what non-perturbative string theory really is.
Thank you!
 
  • #4
String theory has nothing to do with reality. We don't have classical approximation of String theory (QFT). There are many others problems with string theory. Most advanced theory which is describe the Universe is quantum field theory, where we consider all matter as a fields.
 
  • #5
icantevenn said:
Hello,
I am new to this.
As I understand it, the difference between the quantum field theory and string theory is that in the former, physical field is considered as the fundamental reality, while in the latter it is believed that everything comes out of strings. My question is, by everything do we mean matter and energy? What about space? What exists between two strings, for instance? Field?

There are hints from cutting-edge research in black holes (using AdS/CFT and quantum information) that you might have to give up on the notion of a spacetime continuum (and also unitarity) close to the Planck scale and/or for strong gravity.
 
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  • #6
zxz12 said:
String theory has nothing to do with reality. We don't have classical approximation of String theory (QFT). There are many others problems with string theory. Most advanced theory which is describe the Universe is quantum field theory, where we consider all matter as a fields.
String theory is a quantum field theory.
 
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1. What is String Theory?

String Theory is a theoretical framework in physics that attempts to reconcile the principles of quantum mechanics and general relativity. It proposes that the fundamental building blocks of the universe are not particles, but tiny one-dimensional strings that vibrate at different frequencies.

2. Is String Theory a proven theory?

No, String Theory is still a theoretical concept and has not been proven through experiments. However, it has gained a lot of attention and is actively being researched by scientists in an attempt to provide a unified theory of physics.

3. What exists between strings in String Theory?

According to String Theory, there is no empty space between strings. Instead, the space between strings is filled with a vibrating energy field known as the "quantum foam". This foam is constantly fluctuating and is responsible for the properties of particles and forces in our universe.

4. Can String Theory explain dark matter and dark energy?

String Theory has the potential to explain the existence of dark matter and dark energy, which make up a majority of the universe's mass and energy. However, it is still a work in progress and more research is needed to fully understand these phenomena.

5. How does String Theory impact our understanding of the universe?

String Theory has the potential to provide a unified explanation for the four fundamental forces of nature (gravity, electromagnetism, weak nuclear force, and strong nuclear force). If proven, it would greatly advance our understanding of the universe and could potentially lead to new technological developments.

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