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Can the string scale be related to the cosmic baryon asymmetry?

Stephon H. S. Alexander·S. James Gates Jr
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Abstract

In a previous work, a mechanism was presented by which baryon asymmetry can be generated during inflation from elliptically polarized gravitons. Nonetheless, the mechanism only generated a realistic baryon asymmetry under special circumstances which requires an enhancement of the lepton number from an unspecified GUT. In this note we provide a stringy embedding of this mechanism through the Green-Schwarz mechanism, demonstrating that if the model-independent axion is the source of the gravitational waves responsible for the lepton asymmetry, one can observationally constrain the string scale and coupling.

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Stephon H. S. Alexander, S. James Gates Jr. 2005-09-11. Can the string scale be related to the cosmic baryon asymmetry?. https://doi.org/10.1088/1475-7516%2F2006%2F06%2F018

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