1–3 Jun 2026
Edda
Atlantic/Reykjavik timezone

4d N=4 string islands from asymmetric orbifolds

2 Jun 2026, 15:30
20m
E-103 (Edda)

E-103

Edda

Arngrímsgata 5, 107 Reykjavík, Iceland

Speaker

Elisa Iris Marieni (University of Southampton)

Description

String islands are isolated points in the space of string vacua that have no moduli except the dilaton, enjoy rank reduction and lead to consistent pure supergravity theories. Asymmetric orbifold constructions are powerful tools that enable us to access these points in the moduli space that are inaccessible to more standard string compactification techniques. In this talk, we classify all supersymmetry-breaking crystallographic SO(6) elements and use them to populate the landscape of type II vacua. To construct heterotic vacua, we take as orbifold actions automorphisms of the Leech lattice. In this landscape of 4d N=4 theories we identify many island candidates, explicitly construct some of them and show the appearance of archipelagos.

Authors

Anamaría Font Eduardo Andrés Elisa Iris Marieni (University of Southampton) Gerardo Aldazabal Ida Zadeh Kumar Narain

Presentation materials

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