An Infinte Number of Elementary Particles?

  • Thread starter Curious6
  • Start date
String and Tension

When reading about string theory, the introductory notion seems to be that the tension in a string is what accounts for its properties, allocating it its mass, charge....However, what is it that causes the actual tension in the string? It is said that the graviton represents the elementary particle for which the string has the minimum possible tension, but how can one be sure there is not an even smaller possible tension? What are the lower and upper bounds, or are these not yet known?
 
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