4 papers
Heterotic Strings on Enriques Surfaces
Arata Ishige, Elisa Iris Marieni
We study orbifold compactifications of heterotic strings on Enriques surfaces. We classify the inequivalent shift vectors for both the E8\times E8 and Spin(32)/Z2 lattices, and ana…
Non-Supersymmetric String-String Dualities via Enriques Surfaces
Arata Ishige
We propose non-supersymmetric analogues of 6d N=2 Type II/heterotic dualities via a quotient of a K3 surface: an Enriques surface. We start from Type~II strings on a K3 surface and…
Investigating 9d/8d non-supersymmetric branes and theories from supersymmetric heterotic strings
Yuta Hamada, Arata Ishige
We consider heterotic string theories in nine and eight dimensions. We identify the disconnected part of the spacetime gauge group by studying the outer automorphism of the charge…
More on 8d non-supersymmetric branes and heterotic strings
Yuta Hamada, Arata Ishige, Yuichi Koga
We determine the maximal gauge groups arising in heterotic string theory on . Our analysis proceeds along two approaches. First, we start the moduli space of the supersy…