Advanced university course - 54 hours From differential geometry, to general relativity, classical gravity and quantum gravity For the slides, check http://renormalization.com/19s1/ Program Differential geometry: topological spaces, manifolds, differential manifolds, derivations, vector fields, differential forms, tangent space, cotangent space, tangent bundle, cotangent bundle, Lie derivative, metric, covariant derivative, torsion, curvature, metric compatibility, tetrad, spin connection, Christoffel symbols, Riemann tensor, Ricci tensor, Ricci scalar, Bianchi identities. General relativity: Hilbert action, Palatini formulation, field equations. Coupling of gravity to matter: scalars, fermions, vectors. Energy-momentum tensor and its conservation. Boundary term of the gravitational action. Trace K action. Energy of the gravitational field and its positivity. Perturbative expansion: Propagating degrees of freedom, gauge fixing. Functional integral, Feynman diagrams, renormalization. Gauge fixing at the quantum level. Nonrenormalizabilty of the Hilbert action and its completion. Quadratic corrections, Weyl tensor, Euler characteristics. Quantum gravity: Quantization of matter in external gravity: Unruh effect. Nonrenormalizability of Einstein gravity. Terms that can be absorded into metric redefinitions. Organization of the classical action of quantum gravity with infinitely many terms. Quantization prescription for fakeons. The quantization of gravity. Renormalizability. Unitarity, perturbative unitarity, cutting equations. Calculation of Feynman diagrams in quantum gravity. Fakeon thresholds and average continuation. Projecting away the fakeons from the physical spectrum. Classification of the fakeons. Violations of microcausality. Classicization of the quantum theory. The classical limit of quantum gravity and the corrected field equations of General Relativity. ... https://www.youtube.com/watch?v=VRAMDa6kpqw

La lotta senza storia tra istinto e ragione. Elaboriamo lo studio dell'istinto di mandria e il suo impatto sul nostro comportamento, fino alla spiegazione dell'involuzione della scienza e la chiusura dell'Evo Moderno per entrare nell'Ultimo Evo. Il tutto chiarendo anche l'origine biologico-instintiva dei concetti di bene e di male e cosa nascondono veramente Durata 40 minuti Fisica Quantistica per tutti I segreti della meccanica quantistica alla portata di tutti, spiegati con parole semplici Il canale Youtube è sincronizzato con il canale Odysee: https://odysee.com/@QuantumGravity Pagina Facebook: https://www.facebook.com/FisicaQuantisticaPerTutti Libri miei: 1. Dalla fisica alla vita - Viaggio nell'infinitamente piccolo e ritorno https://amzn.to/2V1UCCM (ebook) https://amzn.to/3jE6ViV (cartaceo) 2. L'involuzione del pensiero scientifico - Come la civiltà perde conoscenza https://amzn.to/37dZLdC (ebook) https://amzn.to/3A3aeFr (cartaceo) Testo universitario (avanzato): 3. Renormalization: https://amzn.to/3dAjwzV Credits Progressive Rock by Audionautix is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/by/4.0/ Artist: http://audionautix.com/ ... https://www.youtube.com/watch?v=N1w7P_-rx-4