We present a pedagogical overview of flux compactifications in string theory, from the basic
ideas to the most recent developments. We concentrate on closed-string fluxes in type-II …

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 study the large volume limit of the scalar potential in Calabi-Yau flux compactifications of
type IIB string theory. Under general circumstances there exists a limit in which the potential …

We demonstrate that flux compactifications of type IIA string theory can classically stabilize
all geometric moduli. For a particular orientifold background, we explicitly construct an …

In this paper, we present a new scenario of the early universe that contains a pre-big bang
ekpyrotic phase. By combining this with a ghost condensate, the theory explicitly violates the …

We show the existence of realistic vacua in string theory whose observable sector has
exactly the matter content of the MSSM. This is achieved by compactifying the E 8× E 8 …

The moduli of N= 1 compactifications of IIB string theory can be stabilized by a combination
of fluxes (which freeze complex structure moduli and the dilaton) and nonperturbative …

We clarify the structure of N= 1 supergravity in 1+ 3 dimensions with constant Fayet–
Iliopoulos (FI) terms. The FI terms gξ induce non-vanishing R-charges for the fermions and …

We study the AdS/CFT correspondence as a probe of inflation. We assume the existence of
a string landscape containing at least one stable AdS vacuum and a (nearby) metastable de …

The physics of moduli fields is examined in the scenario where the gravitino is relatively
heavy with mass of order 10 TeV, which is favored in view of the severe gravitino problem …