Fiol Núñez, BartomeuDuran Lamiel, Joaquim2023-02-272023-02-272023-01https://hdl.handle.net/2445/194234Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2022-2023, Tutor: Bartomeu Fiol NúñnezWe present a derivation of the decay rate of a Hydrogen-type atom subjected to an external electrical field, the so-called Oppenheimer’s formula. The perturbative approach to this problem yields a divergent result, so we introduce the necessary mathematical tools to obtain a finite answer, and we illustrate them with two toy models. The result obtained agrees with the answer obtained originally by a WKB analysis.5 p.application/pdfengcc-by-nc-nd (c) Duran, 2023http://creativecommons.org/licenses/by-nc-nd/3.0/es/Fórmula d'OppenheimerAproximació WKBTreballs de fi de grauOppenheimer’s formulaWKB approximationBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess