Salvadó Serra, JordiRifà Estol, Jacob2024-09-262024-09-262024-01https://hdl.handle.net/2445/215412Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2024, Tutor: Jordi Salvadó SerraWe investigate the impact of new neutrino physics on the expansion history of the universe, we analyzing first-order perturbations of neutrinos interacting with a very light and week interacting scalar field. Considering the interplay between neutrinos, scalar fields, and the cosmological environment, we explore the theoretical framework to uncover potential effects on the cosmic evolution.5 p.application/pdfengcc-by-nc-nd (c) Rifà, 2024http://creativecommons.org/licenses/by-nc-nd/3.0/es/NeutrinsExpansió de l'universTreballs de fi de grauNeutrinosExpanding universeBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess