We consider a Bubble Expansion mechanism for the production of scalar dark matter during a first-order phase transition in the early Universe. Seeking for a dark matter energy density in agreement with observations, we study different renormalizable and non-renormalizable interactions between the dark matter species and the field undergoing the transition, considering all the possible regimes...
We reflect on the possibility of breaking the diffeomorphism (Diff) invariance in the gravitational couplings of matter down to only transverse diffeomorphisms (TDiff), and study the consequences on scalar field theories. We begin by analyzing the general implications of this restricted symmetry for a single scalar field within a general setting. Afterwards, we study the cosmological scenario...
These past years the theoretical particle physics community has been, once more, gradually shifting their attention to the phenomenology of highly energetic processes. And rightfully so, as the next big project in the particle physics landscape, the EIC (Electron-Ion Collider), while still undergoing construction, is expected to enter commission with the coming of the new decade. The EIC will...
General Relativity theoretically allows the formation of black holes through the gravitational collapse of purely electromagnetic radiation. However, this scenario would involve electromagnetic strengths surpassing the critical Schwinger limit, resulting in the generation of electron-positron pairs. This quantum phenomenon counteracts the collapse, with the created particles scattering out of...
LHCb has observed giant CP violation in localized regions of the Dalitz plots of B to three charmless light mesons. This has been interpreted as an enhancement due to strong two-body final state interactions. In this talk, we show how such interactions, described with dispersive analyses of data, can be implemented beyond the leading order expansion in the two-body re-scattering amplitude.
Understanding the mechanisms governing star formation in galaxies is key to unravel their evolution. This work employs Bayesian statistics and data mining techniques to analyze metallicity gradients, which provide valuable insights into the processing and enrichment of gas in galaxies. A notable trend is the manifestation of the downsizing effect the in resolved properties of galaxies, where...
