Murcia Gil, Ángel JesúsSan Gil Pascual, Álvaro2025-09-192025-09-192025-06https://hdl.handle.net/2445/223298Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutor: Angel Jesús Murcia GilWe study extensions of Maxwell electrodynamics which respect Lorentz invariance, gauge symmetry, conformal symmetry and are invariant under electromagnetic duality rotations. We carefully derive and show that there exists a unique one-parameter family of theories that preserves all these properties. It receives the name of ModMax and we examine how Coulomb’s law is modified within this set of theories and the appearance of birefringence in vacuum6 p.application/pdfengcc-by-nc-nd (c) San Gil, 2025http://creativecommons.org/licenses/by-nc-nd/3.0/es/Electrodinàmica no linealTreballs de fi de grauNon-linear electrodynamicsBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess