Quantum Field Theory visualized

Quantum Field Theory visualized

In theoretical physics, quantum field theory (QFT) is a theoretical framework that combines classical field theory, special relativity and quantum mechanics, but not general relativity’s description of gravity. QFT is used in particle physics to construct physical models of subatomic particles and in condensed matter physics to construct models of quasiparticles.

QFT treats particles as excited states (also called quanta) of their underlying quantum fields, which are more fundamental than the particles. Interactions between particles are described by interaction terms in the Lagrangian involving their corresponding quantum fields. Each interaction can be visually represented by Feynman diagrams according to perturbation theory in quantum mechanics.

Source : Wikipedia

How to reconcile relativity with quantum mechanics ? How do we describe particles mathematically ? Where does the electric charge come from ? All these answers in 15 minutes !

0:00 – Introduction 1:52 – Field and spin 4:38 – Conserved quantities 6:02 – Quantum field 7:39 – Standard model 10:15 – Interactions 13:58 – Conclusion

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