Salvador Solé, EduardArnau Romeu, Joan2014-11-182014-11-182014-06https://hdl.handle.net/2445/59759Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2014, Tutor: Eduard Salvador SoléIn this report we make a detailed derivation of Friedman Equations, which are the dy- namical equations of a homogeneous and isotropic universe. First, we derive them in the framework of the General Relativity keeping the relativistic expressions as a reference for the rest of the report. Then, using the Newtonian formalism and solving some fundamental problems, we reach some dy- namical equations for the universe and compare the results with the relativistic ones, focusing our attention on the meaning of the expressions and on the cosmological constant.5 p.application/pdfengcc-by-nc-nd (c) Salvador Solé, 2014http://creativecommons.org/licenses/by-nc-nd/3.0/es/Cosmologia quànticaEquacionsTreballs de fi de grauQuantum cosmologyEquationsBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess