6 papers
On Cosmologies and Vacua Driven by Tension and Curvatures
J. Mourad, A. Sagnotti
We investigate the effects of the exponential potentials typical of non-supersymmetric strings in cosmologies whose spatial and internal slices are maximally symmetric spaces with…
Supersymmetry Breaking with Fields, Strings and Branes
E. Dudas, J. Mourad, A. Sagnotti
The first part of this review tries to provide a self-contained view of supersymmetry breaking from the bottom-up perspective. We thus describe N=1 supersymmetry in four dimensions…
Brane-Like Solutions and Other Non-Supersymmetric Vacua
J. Mourad, S. Raucci, A. Sagnotti
After recasting the standard charged and uncharged brane profiles in the harmonic gauge, we explore solutions with the same isometries where the potentials of te…
Brane Profiles of Non-Supersymmetric Strings
J. Mourad, S. Raucci, A. Sagnotti
We connect the indications of 2D CFT for branes in non-supersymmetric strings to actual spacetime profiles, taking the bulk tadpole potentials into account. We find exact solutions…
A 4D IIB Flux Vacuum and Supersymmetry Breaking. II. Bosonic Spectrum and Stability
J. Mourad, A. Sagnotti
We recently constructed type-IIB compactifications to four dimensions depending on a single additional coordinate, where a five-form flux on an internal torus leads to a consta…
Effective Orientifolds from Broken Supersymmetry
J. Mourad, A. Sagnotti
We recently proposed a class of type IIB vacua that yield, at low energies, four--dimensional Minkowski spaces with broken supersymmetry and a constant string coupling. They are co…