Abstract

By considering the effects of string winding and momentum modes ona time dependent background, we find a method by which six compactdimensions become stabilized naturally at the self-dual radiuswhile three dimensions grow large.

Highlights

  • String theory continues to be a promising candidate for a quantum theory of gravity

  • There are several key challenges in an attempt to relate the theory to phenomenology. One such issue is that string theory predicts a number of extra spatial dimensions

  • We will demonstrate that, working in the regime of weak string coupling and at tree level in α′, we find that the dynamics of string winding and momentum modes lead to a natural mechanism to stabilize the extra dimensions at the self-dual radius

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Summary

INTRODUCTION

String theory continues to be a promising candidate for a quantum theory of gravity. there are several key challenges in an attempt to relate the theory to phenomenology. The authors of [1] argued that, by considering the dynamics of the winding and momentum modes of the strings, a new symmetry specific of string theory, namely t-duality, could eliminate the big-bang singularity and explain the dimensionality of space-time. These result from demanding conformal invariance of the world-sheet action (vanishing β functions).

DYNAMICS OF STRINGS IN TIME-DEPENDENT BACKGROUNDS
STRING SOURCES AND T-DUALITY
STABILIZATION
CONCLUSION

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