Abstract:
Basic features of the superstring picture of the microworld are discussed. This picture suggests that there is a certain nonlocal object–the string–in many-dimensional (D = 10, 26, 506) space-time on the scale of the Planck length (10$^{-33}$ cm). Transition to larger scales gives rise to the localization and compactification of the theory. The result is an effective supersymmetric low-energy theory combining all fundamental interactions, including gravity.
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