EN BREF Modèle cosmologique: Description mathématique de l’histoire de l’Univers. Équations de Friedmann: Fondement des modèles cosmologiques modernes. Cosmologie: Étude des structures et de l’évolution de l’Univers. Physique quantique: Base des théories des particules et de la matière. Constante de Hubble: Mesure de l’expansion de l’Univers. Calcul différentiel et intégral: Outils mathématiques clés en mécanique … Read more
IN BRIEF String theory: fundamental theoretical framework in physics. The fundamental objects are vibrating strings. Elementary particles correspond to the different vibrations of the strings. Famous for its ambition to be the “theory of everything”, unifying the forces of nature. Involves 11 dimensions in some formulations. A popularization necessary to make science accessible. Exploration of … Read more
IN SHORT Theory of Everything: quest for unification of fundamental interactions. Bringing together general relativity and quantum mechanics: major challenge of modern physics. History: the search for a unitary theory initiated by giants like Einstein. Four forces of nature: ultimate goal of physics. Contemporary theories: at the forefront, string theory and unified fields. Philosophical stakes: … Read more
IN BRIEF Hidden dimensions in the Universe: concepts and theories. Mechanism to confer mass to neutrinos. Physics of particles confined on surfaces called branes. Exploration of hidden variables in quantum physics. Kaluza-Klein theory and extra dimensions. Search for standard model particles and the graviton. Links with concepts of multiverse and time travel. Seeks to solve … Read more
IN BRIEF Definition: A thought experiment is a hypothetical method used to explore complex concepts in theoretical physics. Steps: Includes the formulation of hypotheses, the description of imaginary situations, and the analysis of results. Utility: Allows for the clarification of theories, illustrates physical principles, and challenges preconceived ideas. Famous examples: Include Galileo’s experiments on free … Read more
IN BRIEF Two approaches to physics: Classical Mechanics and Quantum Mechanics Classical Mechanics: motion of macroscopic bodies (laws of Newton) Quantum Mechanics: study of subatomic particles and their behaviors. Importance of energy quantization in quantum mechanics. Orbitals: description of the electron cloud and probability of presence of a particle. Convergence between the two mechanics at … Read more
IN BRIEF Successful measurement of gravity at the microscopic scale Research on quantum gravity to unify fundamental forces Pursuit of a theory unifying general relativity and quantum physics Challenges of interactions of particles at the microscopic scale Loop quantum gravity: discrete spacetime Potential impact on cryptography and computability Exploration of issues related to quantum measurement … Read more
IN BRIEF Start with classical physics. Avoid quantum mechanics and theory of relativity at the beginning. Focus on experimental or computational research projects. Have a minimum background in mathematics. Consider a M2 in theoretical physics as a classical pathway. Acquire knowledge of wave function in quantum physics. Take university courses to deepen knowledge. Explore fundamental … Read more