77 citations · 199 across the 5 of their papers we have counts for
5 papers
A new class of de Sitter vacua in String Theory Compactifications
Ana Achúcarro, Pablo Ortiz, Kepa Sousa
We revisit the stability of the complex structure moduli in the large volume regime of type-IIB flux compactifications. We argue that when the volume is not exponentially large, su…
Perturbative Stability along the Supersymmetric Directions of the Landscape
Kepa Sousa, Pablo Ortiz
We consider the perturbative stability of non-supersymmetric configurations in N=1 supergravity models with a spectator sector not involved in supersymmetry breaking. Motivated by…
Inflation with moderately sharp features in the speed of sound: GSR and in-in formalism for power spectrum and bispectrum
Ana Achucarro, Vicente Atal, Bin Hu +2
We continue the study of mild transient reductions in the speed of sound of the adiabatic mode during inflation, of their effect on the primordial power spectrum and bispectrum, an…
Localized correlated features in the CMB power spectrum and primordial bispectrum from a transient reduction in the speed of sound
Ana Achucarro, Vicente Atal, Pablo Ortiz +1
The first year of observations by the Planck satellite mission shows that the cosmic microwave background (CMB) fluctuations are consistent with gaussian statistics in the primordi…
Sgoldstino inflation
Ana Achúcarro, Sander Mooij, Pablo Ortiz +1
We discuss the possibility that inflation is driven by the sgoldstino, the superpartner of the goldstino. Unlike in generic supergravity scenarios, the sgoldstino decouples from al…