Type I string theory

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The string theory type I is one of the five variants of superstring theories , which were developed in the 1980s. It is the only one based not only on closed but also on open strings, but again it is the only theory in which the strings are disoriented. In contrast to the previous model, the superstring theory is based on only 10 dimensions instead of 26.

In the 1990s Edward Witten was able to prove that the coupling constant g in type I is equivalent to the coupling constant of the SO (32) heterotic string theory with the coupling constant 1 / g, this fact is called S-duality and these were the key to Witten's approach the M-theory 1995.

Individual evidence

1. ^ Edward Witten: String Theory Dynamics In Various Dimensions . In: Nucl.Phys . B443. Cornell University, 1995, pp. 85–126 , arxiv : hep-th / 9503124 (English).