60 citations · 156 across the 11 of their papers we have counts for
11 papers
Chiral global embedding of Fibre Inflation with uplift
Michele Cicoli, Antonella Grassi, Osmin Lacombe +1
We carefully analyse the challenges posed by the construction of type IIB chiral global embeddings of Fibre Inflation with uplift to a de Sitter vacuum. We pre…
Higher-derivative supersymmetric effective field theories
Osmin Lacombe, Lorenzo Paoloni, Francisco G. Pedro
In this paper we study higher-derivative supersymmetric effective field theories focusing on the systematic procedure for the elimination of ghosts from the spectrum. Particular at…
Flux vacua in type IIB compactifications on orbifolds: their finiteness and minimal string coupling
Ignatios Antoniadis, Anthony Guillen, Osmin Lacombe
We perform a detailed study of (supersymmetric) moduli stabilisation in type IIB toroidal orientifolds with fluxes. We provide strong evidence towards exhaustion of the finite numb…
Are theories really relevant to cosmology?
Osmin Lacombe, Shinji Mukohyama, Josef Seitz
We examine theories that directly couple the curvature or with the matter sector in the action, in addition to the universal coupling. We argue t…
Multi-scalar theories of gravity with direct matter couplings and their parametrized post-Newtonian parameters
Osmin Lacombe, Shinji Mukohyama
We study theories of gravity including, in addition to the metric, several scalar fields in the gravitational sector. The particularity of this work is that we allow for direct cou…
Self-tuning of the cosmological constant in brane-worlds with
Osmin Lacombe, Shinji Mukohyama
We revisit the idea of self-tuning the observed cosmological constant to a vanishing value and promote it to a selection criterion of brane-world models, in which our Universe is d…
Hybrid inflation and waterfall field in string theory from D7-branes
Ignatios Antoniadis, Osmin Lacombe, George K. Leontaris
We present an explicit string realisation of a cosmological inflationary scenario we proposed recently within the framework of type IIB flux compactifications in the presence of th…
Inflation near a metastable de Sitter vacuum from moduli stabilisation
Ignatios Antoniadis, Osmin Lacombe, George K. Leontaris
We study the cosmological properties of a metastable de Sitter vacuum obtained recently in the framework of type IIB flux compactifications in the presence of three D7-brane stacks…
Note on supersymmetric Dirac-Born-Infeld action with Fayet-Iliopoulos term
Ignatios Antoniadis, Hongliang Jiang, Osmin Lacombe
We study the Dirac-Born-Infeld (DBI) action with one linear and one non-linear supersymmetry in the presence of a constant Fayet-Iliopoulos (FI) D-term added explicitly or through…
Supersymmetry Deformations, Electromagnetic Duality and Dirac-Born-Infeld Actions
Ignatios Antoniadis, Hongliang Jiang, Osmin Lacombe
We study the general deformation of supersymmetry transformations of a vector multiplet that forms a (constant) triplet under the R-symmetry corresponding to…
Imprints of relativistic effects on the asymmetry of the halo cross-correlation function: from linear to non-linear scales
Michel-Andrès Breton, Yann Rasera, Atsushi Taruya +2
The apparent distribution of large-scale structures in the universe is sensitive to the velocity/potential of the sources as well as the potential along the line-of-sight through t…