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In the spectrum of the closed string, we encountered a graviton. Why is the symmetric 2-tensor in the open string spectrum, not a graviton?
String theory: gravitons for closed strings vs. open strings
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SUMMARY
The discussion centers on the distinction between gravitons in closed string theory and the symmetric 2-tensor in open string theory. It is established that the graviton, a massless particle, appears in the closed string spectrum, while the symmetric 2-tensor in the open string spectrum is not a graviton due to its mass. This highlights a fundamental difference in the properties of particles derived from closed versus open strings.
PREREQUISITES- Understanding of string theory fundamentals
- Knowledge of particle physics, specifically massless and massive particles
- Familiarity with the concepts of closed and open strings
- Basic grasp of tensor mathematics in theoretical physics
- Research the role of gravitons in closed string theory
- Explore the implications of mass in particle physics
- Study the mathematical framework of tensors in string theory
- Investigate the differences between closed and open string theories
The discussion is beneficial for theoretical physicists, string theorists, and students of advanced physics seeking to deepen their understanding of particle properties in string theory.
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