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arXiv · 2310.13735

Entanglement Entropy in String Compactifications

Atish Dabholkar·Upamanyu Moitra
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Abstract

We consider $\mathbb{Z}_N$ orbifolds of Type-II compactifications to four and six dimensions on several Calabi-Yau manifolds in the orbifold limit with the aim to compute the entanglement entropy. The spectrum can contain tachyons in the doubly-twisted sectors which can lead to new infrared divergences for the partition function that are not present in the orbifolds of the uncompactified ten-dimensional theory. We show that all tachyonic contributions in these models admit a resummation and analytic continuation that yields finite entropy in the physical region $0 < N \leq 1$ just as in ten dimensions.

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Atish Dabholkar, Upamanyu Moitra. 2023-10-20. Entanglement Entropy in String Compactifications. https://doi.org/10.1007/jhep06(2024)209

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