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 …

The past two decades have seen transformative advances in cosmology and string theory.
Observations of the cosmic microwave background have revealed strong evidence for …

We analyze to which extent the KKLT proposal for the construction of de Sitter vacua in
string theory is quantitatively controlled. Our focus is on the quality of the 10d supergravity …

We find a mechanism by which antibranes placed in a warped deformed conifold throat can
destroy the stabilization of the size of the sphere at the tip, collapsing it to zero size. This …

A bstract The large volume scenario (LVS) for de Sitter compactifications of the type IIB string
is, at least in principle, well protected from various unknown corrections. The reason is that …

We argue that effective actions for warped compactifications can be subtle, with large
deviations in the effective potential from naive expectations owing to constraint equations …

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 We analyze the de Sitter construction of [1] using ten-dimensional supergravity,
finding exact agreement with the four-dimensional effective theory. Starting from the …

A bstract We consider a novel scenario for modulus stabilisation in IIB string
compactifications in which the Kähler moduli are stabilised by a general set-up with two …

We give a broad conceptual review of what we have learned about black holes and their
microstate structure from the study of microstate geometries and their string theory limits. We …