Little string theories (LSTs) are UV complete nonlocal six-dimensional (6D) theories
decoupled from gravity in which there is an intrinsic string scale. In this paper, we present a …

We construct non-geometric compactifications using the F-theory dual of the heterotic string
compactified on a two-torus, together with a close connection between Siegel modular forms …

A bstract Eight-dimensional nongeometric heterotic strings were constructed as duals of F-
theory on Λ 1, 1⊕ E 8⊕ E 7 lattice polarized K3 surfaces by Malmendier and Morrison. We …

We describe explicit formulas relevant to the F-theory/heterotic string duality that reconstruct
from a specific Jacobian elliptic fibration on the Shioda–Inose surface covering a generic …

We study the family of K3 surfaces of Picard rank sixteen associated with the double cover of
the projective plane branched along the union of six lines, and the family of its Van Geemen …

A bstract We study the (1, 0) six-dimensional SCFTs living on defects of non-geometric
heterotic backgrounds (T-fects) preserving a E 7× E 8 subgroup of E 8× E 8. These …

For each Fano threefold, we construct a family of Landau--Ginzburg models which satisfy
many expectations coming from different aspects of mirror symmetry; they are log Calabi …

Eight-dimensional non-geometric heterotic strings with gauge algebra $\mathfrak {e}
_8\mathfrak {e} _7 $ were constructed by Malmendier and Morrison as heterotic duals of F …

In this work we study the duality between F-theory and the heterotic string beyond the stable
degeneration limit in F-theory and large fiber limit in the heterotic theory. Building upon a …

This paper establishes a correspondence relating two specific classes of complex algebraic
K3 surfaces. The first class consists of K3 surfaces polarized by the rank-16 lattice H⊕ E 7⊕ …