Zobrazeno 1 - 10
of 404
pro vyhledávání: '"Bastero P"'
The discrepancies in different measurements of the lifetime of isolated neutrons could be resolved by considering an extra neutron decay channel into dark matter, with a branching ratio of the order of $O(1$\%). Although the decay channel into a dark
Externí odkaz:
http://arxiv.org/abs/2403.08666
Building on recently constructed inflationary vector dark matter production mechanisms as well as studies of magnetogenesis, we show that an inflationary dark Schwinger mechanism can generate the observed dark matter relic abundance for `dark electro
Externí odkaz:
http://arxiv.org/abs/2312.15137
We consider a simple setup with a dark sector containing dark electrons charged under an abelian $U(1)_D$ gauge symmetry. We show that if the massless dark photon associated to the $U(1)_D$ is produced during inflation in such a way as to form a clas
Externí odkaz:
http://arxiv.org/abs/2311.09475
Autor:
Beaufort, C., Bastero-Gil, M., Catalano, A., Erfani-Harami, D-S., Guillaudin, O., Santos, D., Savorgnano, S., Vezzu, F.
This paper presents Dandelion, a new dish antenna experiment searching for dark photons (DPs) with masses around the meV that will start acquiring data by the end of 2023. A spherical mirror acts as a conversion surface between DPs and standard photo
Externí odkaz:
http://arxiv.org/abs/2310.16505
Publikováno v:
Bulletin of the Argentine Astronomical Society (BAAA) 63:328-330, 2022
One of the main difficulties that students have in learning astronomy topics is that they fail to relate theoretical information with what they experience in the world around them. The construction by students of a conceptual framework in accordance
Externí odkaz:
http://arxiv.org/abs/2304.01131
Publikováno v:
Bulletin of the Argentine Astronomical Society (BAAA) 63:331-332, 2022
There are vast educational research works that highlight the serious difficulties that students present in learning astronomical subjects, as well as the prevalence of a traditional education distanced from the observational and experiential, thus ac
Externí odkaz:
http://arxiv.org/abs/2304.01113
Production of gravitationally coupled light moduli fields must be suppressed in the early universe, so that its decay products do not alter Big Bang Nucleosynthesis (BBN) predictions for light elements. On the other hand, the moduli quanta can be cop
Externí odkaz:
http://arxiv.org/abs/2303.17383
The decay of Axion-Like Particles (ALPs) trapped in the solar gravitational field would contribute to the observed solar X-ray flux, hence constraining ALP models. We improve by one order of magnitude the existing limits in the parameter space $(g_{a
Externí odkaz:
http://arxiv.org/abs/2303.06968
Publikováno v:
JCAP 06 (2024) 060
We compute the power spectrum of super-horizon curvature perturbations generated during a late period of thermal inflation, taking into account fluctuation-dissipation effects resulting from the scalar flaton field's interactions with the ambient rad
Externí odkaz:
http://arxiv.org/abs/2301.11666
Inflaton-vector interactions of the type $\phi F\tilde{F}$ have provided interesting phenomenology to tackle some of current problems in cosmology, namely the vectors could constitute the dark matter component. It could also lead to possible signatur
Externí odkaz:
http://arxiv.org/abs/2209.15572