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arXiv · 1201.6606

Quantum backreaction in string theory

Oleg Evnin
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Abstract

There are situations in string theory when a finite number of string quanta induce a significant backreaction upon the background and render the perturbation theory infrared-divergent. The simplest example is D0-brane recoil under an impact by closed strings. A more physically interesting case is backreaction on the evolution of a totally compact universe due to closed string gas. Such situations necessitate qualitative amendments to the traditional formulation of string theory in a fixed classical background. In this contribution to the proceedings of the XVII European Workshop on String Theory in Padua, I review solved problems and current investigations in relation to this kind of quantum backreaction effects.

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Oleg Evnin. 2012-01-31. Quantum backreaction in string theory. https://doi.org/10.1002/prop.201200034

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