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We study the space of 2→2 scattering amplitudes of neutral Goldstone bosons in four space-time dimensions. We establish universal bounds on the first two non-universal Wilson coefficients of the low energy Effective Field Theory (EFT) for such particl ...
L’architecture prend souvent le parti élitiste de s’adresser à la mince frange de population ayant fait le choix de s’éduquer pour en saisir les subtils secrets, laissant les autres hors-circuit, alors qu’ils en seront pourtant les usagers majoritaires. Da ...
Les émissions de CO2 émises par le secteur de la construction représentent 11% des émissions globales de l’humanité (2019). En raison de l’urgence climatique, il est nécessaire de les réduire. Dans ce contexte et selon les conclusions données par la pré-é ...
The LHCb experiment is one of the large experiments installed around the LHC collider. Its aim is the study of CP violation and rare b-hadrons decays. This thesis addresses these two objectives. CP violation was found in 1964 in the decays of neutral kaons ...
The topology of the electron wavefunctions in certain band insulators can give rise to novel topological phases. Materials harbouring such topological phases are termed topological insulators (TI). A gapped bulk electronic spectrum, described by a topologi ...
The electrical detection of surface spin polarization in Indium Phosphide (InP) is demonstrated. Using a planar four-terminal architecture on top of semi-insulating Fe: InP (001) wafers, optical orientation is separated from electrical detection. Spin filt ...
The mutual interplay between superlattice structures, band filling factors, and spin-orbit coupling results in a highly correlated electronic spin and charge state found for an array of atomic Pb wires grown on Si(557). By means of spin-and angle-resolved ...
Recent analyses of cosmological data suggest the presence of an extra relativistic component beyond the Standard Model content. The Higgs-Dilaton cosmological model predicts the existence of a massless particle - the dilaton - associated with the spontaneo ...
We study the evolution of magnetic fields coupled with chiral fermion asymmetry in the framework of chiral magnetohydrodynamics with zero initial total chirality. The initial magnetic field has a turbulent spectrum peaking at a certain characteristic scale ...
We report on a new mechanism that leads to the generation of primordial chiral gravitational waves, and hence, the violation of the parity symmetry in the Universe. We show that nonperturbative production of fermions with a definite helicity is accompanied ...
