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String Theory and the Dark Glueball Problem

2 Pith papers cite this work, alongside 63 external citations. Polarity classification is still indexing.

2 Pith papers citing it
63 external citations · Pith
abstract

We study cosmological constraints on dark pure Yang-Mills sectors. Dark glueballs are overproduced for large regions of ultraviolet parameter space. The problem may be alleviated in two ways: via a large preferential reheating into the visible sector, motivating certain inflation or modulus decay models, or via decays into axions or moduli, which are strongly constrained by nucleosynthesis and $\Delta N_{\text{eff}}$ bounds. String models frequently have multiple hidden Yang-Mills sectors, which are subject to even stronger constraints due to the existence of multiple dark glueballs.

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2026 1 2019 1

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