Can String Theory Explain Fundamental Particles Through Standing Waves?

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Discussion Overview

The discussion revolves around the relationship between string theory and the explanation of fundamental particles, specifically whether these particles can be understood through the concept of standing waves or resonances of strings. The scope includes theoretical aspects of string theory and its implications for particle physics.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants suggest that string theory describes fundamental particles as arising from the standing waves or resonances of strings, with different vibration patterns corresponding to different particles.
  • Others argue that while string theory involves one-dimensional strings, the current understanding includes two-dimensional branes, which may alter the dimensional requirements for particle existence.
  • One participant challenges the idea that resonances correspond to standard model particles, stating that fundamental particles correspond to zero modes in the theory, suggesting a different conceptualization of particles as "elastic rods" rather than strings.

Areas of Agreement / Disagreement

Participants express differing views on the role of standing waves in string theory and the nature of fundamental particles, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

There are unresolved assumptions regarding the dimensionality of strings and branes, as well as the implications of string tension on particle characteristics. The discussion reflects a range of interpretations and lacks definitive conclusions.

alantheastronomer
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I've heard in a general way that string theory can describe the properties of the fundamental particles through standing waves or resonances of strings. Is this in fact the case, and if so, can someone provide a link to the relevant research papers?
 
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Here at PF we do encourage some activity from posters; a simple google search, for instance. If you then ask more specific questions we can provide specific help. Asking for 'Relevant research papers' is a bit moot :rolleyes: .
 
Yes, that's the case. In string theory it suggests that one dimensional vibrating string produces fundamental particle. Different pattern in vibration produces different pattern. Firstly it was suggested 1d strings but now replacing string there is 2 dimensional branes which are like loop structure. According to string theory, we need 10 dimensions for fermionic strings and more than 20 dimension for bosonic string to exist. But now from M theory we all need is 10 dimensions for these branes to exist. You can view this in Wikipedia..
 
No resonance or higher mode of a string is expected to correspond to a standard model particle.

What happens is that the fundamental particles we know will correspond to zero modes in the 10D theory, or equivalently to particles produced in some extreme limit of the string tension. So the particles we know are actually "elastic rods" more than "strings".
 

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