We review particle physics model building in type IIB string theory and F-theory. This is a
region in the landscape where in principle many of the key ingredients required for a …

A bstract In M-theory, the only AdS 7 supersymmetric solutions are AdS 7× S 4 and its
orbifolds. In this paper, we find and classify new supersymmetric solutions of the type AdS …

We construct AdS4 flux vacua of type IIA string theory in the supergravity (large volume,
small) regime, including the backreaction of O6‐planes. Our solutions are the localized …

Recently it has been conjectured that string theory does not allow for dS vacua or dS
extrema. To scrutinize such a conjecture, it is important to study concrete string theory …

A bstract We consider α′ 2 curvature corrections to the action of an NS5-brane which plays
the key role in the metastability analysis of warped anti-D3-brane uplifts by Kachru, Pearson …

A bstract M-theory and string theory predict the existence of many six-dimensional SCFTs. In
particular, type IIA brane constructions involving NS5-, D6-and D8-branes conjecturally give …

A bstract It was recently argued that the swampland distance conjecture rules out dS vacua
at parametrically large field distances. We point out that this conclusion can in principle be …

A bstract We describe in detail how the spectrum of a single anti-D3-brane in four-
dimensional orientifolded IIB string models reproduces precisely the field content of a …

The difficulty of building metastable vacua in string theory, has led some to conjecture that in
the string theory landscape, potentials satisfy|∇ V/V|≥ c∼ O (1). This condition, which is …

A bstract Scale-separated AdS compactifications of string theory can be constructed at the
two-derivative supergravity level in the presence of smeared orientifold planes. The …