This review is devoted to open strings, and in particular to the often surprising features of
their spectra. It follows and summarizes developments that took place mainly at the …

We survey on-shell and off-shell higher derivative supergravities in dimensions 1≤ D≤ 11.
Various approaches to their construction, including the Noether procedure,(harmonic) …

We propose a graph-based approach to 5d superconformal field theories (SCFTs) based on
their realization as M-theory compactifications on singular elliptic Calabi-Yau threefolds …

We discuss five-dimensional supersymmetric gauge theories. An anomaly renders some
theories inconsistent and others consistent only upon including a Wess-Zumino type Chern …

A bstract The Swampland Distance Conjecture suggests that an infinite tower of modes
becomes exponentially light when approaching a point that is at infinite proper distance in …

By analyzing F-theory on K3 near the orbifold limit of K3 we establish the equivalence
between F-theory on K3 and an orientifold of type IIB on T2, which in turn is related by a T …

We study five-dimensional supersymmetric field theories with one-dimensional Coulomb
branch. We extend a previous analysis which led to non-trivial fixed points with En symmetry …

We explore higher-form symmetries of M-and F-theory compactified on elliptic fibrations,
determined by the topology of their asymptotic boundaries. The underlying geometric …

Superunification underwent a major paradigm shift in 1984 when eleven-dimensional
supergravity was knocked off its pedestal by ten-dimensional superstrings. This last year has …

We revisit the correspondence between Calabi-Yau (CY) threefold isolated singularities
$\mathbf {X} $ and five-dimensional superconformal field theories (SCFTs), which arise at …