We consider “brane-universes”, where matter is confined to four-dimensional hypersurfaces (three-branes) whereas one extra compact dimension is felt by gravity only. We show that the cosmology of… (More)

We consider the cosmology of a “3-brane universe” in a five dimensional (bulk) space-time with a cosmological constant. We show that Einstein’s equations admit a first integral, analogous to the… (More)

We show that inflation which is dominated by the D-term density avoids the 'slow-roll' problem of inflation in supergravity. Such an inflationary scenario can naturally emerge in theories with… (More)

This report provides a pedagogical introduction to the description of the general Poincaré supergravity/matter/Yang-Mills couplings using methods of Kähler superspace geometry. At a more advanced… (More)

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 the superpotential.… (More)

Thanks to the many other members and friends of the LISA science community who provided valuable input and suggestions. The New Science of Gravitational Waves Einstein's theory of spacetime and… (More)

We report the first results of the LISA Pathfinder in-flight experiment. The results demonstrate that two free-falling reference test masses, such as those needed for a space-based gravitational wave… (More)

We consider, in 5 dimensions, the low energy effective action induced by heterotic string theory including the leading stringy correction of order α. In the presence of a single positive tension flat… (More)

The last century has seen enormous progress in our understanding of the Universe. We know the life cycles of stars, the structure of galaxies, the remnants of the big bang, and have a general… (More)

We perform a systematic analysis of soft supersymmetry breaking terms at the one loop level in a large class of string effective field theories. This includes the so-called anomaly mediated… (More)