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arXiv · 2501.19015

On (de Sitter) Vacua in Heterotic String Theory

Nicole Righi
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Abstract

Heterotic toroidal orbifolds are a powerful framework for testing our understanding of string vacua. We review recent advances in heterotic model building, from constructing new vacua to proving novel de Sitter no-go theorems. We also illustrate a potential loophole that could pave the way for the realisation of de Sitter vacua within heterotic string theories. This involves the introduction of non-perturbative, stringy, dilaton-dependent corrections to the K\"ahler potential. We discuss how recently found non-BPS heterotic instantons might provide the necessary corrections.

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Nicole Righi. 2025-01-31. On (de Sitter) Vacua in Heterotic String Theory. https://arxiv.org/abs/2501.19015

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