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arXiv · 2201.04668

Towards a Dark Sector Model from String Theory

Heliudson Bernardo·Robert Brandenberger·Jürg Fröhlich
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Abstract

An embedding of a unified dark sector model into string theory with the following features is proposed: The model-independent axion descending from the Kalb-Ramond 2-form field is identified with the dark-matter field, and the real part of a K\"ahler modulus field -- the ``radius'' of one of the extra spatial dimensions -- accounts for dark energy. The expectation value of the dilaton field is stabilized by a gaugino condensation mechanism. A dark-energy potential corresponding to a realistic low energy scale results from some gentle tuning of the stabilized expectation value of the dilaton. The resulting potential reproduces the one in a previous dark-sector model proposed by two of us.

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Heliudson Bernardo, Robert Brandenberger, Jürg Fröhlich. 2022-01-12. Towards a Dark Sector Model from String Theory. https://doi.org/10.1088/1475-7516%2F2022%2F09%2F040

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