Vibrating strings and string theory

In summary: This replaces the concept of subatomic particles with that of vibrating strings. This means that at every scale, there is an interesting structure that deserves its own study, rather than saying that it does not exist. In summary, the fundamental part of string theory is that particles are made up of vibrating strings, which replaces the concept of subatomic particles.
  • #1
math_04
23
0
The fundamental part of string theory is that particles are in fact made up of vibrating strings. So this means that the lowest form of unit is a vibrating string?

It goes like this

Human - made up of atoms - atoms made up of subatoms (electrons, protons and neutrons)- quarks. And then come the other smaller units until we finally arrive at a vibrating string. Am I right?
 
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  • #2
it's like how nucleons (protons etc) don't exist themselves, it's the up & down quarks that exist. in the same way the subatomic particles aren't themselves structures which are then composed of strings. instead the notion of a subatomic particle is replaced by that of a vibrating string.
sorry that was a long way of saying it.
make sense? :-]
 
  • #3
chris_183 said:
make sense? :-]
To me it's not really wrong but awkward. You can not say a fruit salad is made of fruit so there is no salad. The concept of salad is relevant by itself. The concept of nucleon is relevant although it is true that nucleons are made up of quarks. The concept of molecule is relevant although it is made up of atom. I can continue for a long list :smile: At every scale there is an interesting structure which deserves its own study, and saying "it does not exist" must be taken with this grain of salt.
 
  • #4
math_04 said:
The fundamental part of string theory is that particles are in fact made up of vibrating strings. So this means that the lowest form of unit is a vibrating string?

It goes like this

Human - made up of atoms - atoms made up of subatoms (electrons, protons and neutrons)- quarks. And then come the other smaller units until we finally arrive at a vibrating string. Am I right?
Yes. That is the basic idea.

The vibrations of the string manifest in the form of properties such as charge and mass.
 

FAQ: Vibrating strings and string theory

What is string theory?

String theory is a theoretical framework that attempts to unify all of physics by describing the fundamental building blocks of the universe as tiny, vibrating strings. It suggests that at the most basic level, all particles are actually one-dimensional strings rather than point-like objects.

What is the significance of vibrating strings in string theory?

In string theory, the vibrations of these tiny strings give rise to all the different particles and forces in the universe. The frequency of the vibrations determines the mass and charge of a particle, while the different modes of vibration correspond to different types of particles.

What is the relationship between string theory and quantum mechanics?

String theory incorporates principles of quantum mechanics, particularly the idea that particles can exist in multiple states simultaneously. The vibrations of strings are described by mathematical equations that are similar to those used in quantum mechanics, making string theory a potential way to reconcile the seemingly conflicting theories of general relativity and quantum mechanics.

What evidence supports string theory?

Currently, there is no direct evidence for string theory. However, it has the potential to explain phenomena that cannot be explained by other theories, such as gravity at a quantum level. Some indirect evidence, such as the existence of supersymmetry and the holographic principle, also lends support to string theory.

What are the challenges and criticisms of string theory?

One of the main criticisms of string theory is that it is currently untestable and lacks empirical evidence. Additionally, there are many different versions of string theory, making it difficult to determine which, if any, accurately describes our universe. Furthermore, some scientists argue that string theory relies heavily on mathematical speculation rather than empirical observation.

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