String theory and the M theory?

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SUMMARY

In the discussion on string theory and M theory, it is established that fermions, such as electrons and quarks, are composed of open strings, while closed strings are associated with gravitons. This distinction is supported by Lee Smolin's book, "The Trouble with Physics," specifically on page 106. The conversation highlights the fundamental differences between open and closed strings in the context of particle physics.

PREREQUISITES
  • Understanding of string theory concepts
  • Familiarity with M theory
  • Knowledge of particle physics, specifically fermions
  • Basic comprehension of graviton properties
NEXT STEPS
  • Read "The Trouble with Physics" by Lee Smolin for in-depth insights
  • Explore the implications of open strings in particle physics
  • Investigate the role of closed strings in gravitational theories
  • Study the relationship between string theory and quantum mechanics
USEFUL FOR

Physicists, students of theoretical physics, and anyone interested in the fundamental aspects of string theory and particle composition.

Nick V
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In string theory/M theory, there are two types of strings, open and closed strings. What kind of strings are fermions(electrons, quarks) made out of? Closed or open strings?
 
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From the book The Trouble with Physics by Lee Smolin, the ends of open strings can represent charged particles and closed ones can represent the graviton. See page 106.
 

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