A twist at infinite distance in the CHL string

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2024年10月9日

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Veronica Collazuol,
Ilarion V. Melnikov

摘要

We analyze a space-time algebra of BPS states that emerges in the infinite distance limit in the moduli space of the nine-dimensional CHL string as the theory decompactifies to the ten-dimensional E₈ × E₈ heterotic string. We find an affine algebra as expected from the heterotic case, but in a twisted version.