Quantum field theory marries the ideas of other quantum theories to depict all particles as “excitations” that arise in underlying fields. The British physicist Paul Dirac started the ball ...

Aug 17, 2023 · 20 Every time I read about quantum field theories, I wrongly assume and associate the theory to the Standard Model, that is, our current theory of particles and …

2 days ago · Quantum Field Theory (QFT) is the theoretical framework describing the quantisation of classical fields which allows a Lorentz-invariant formulation of quantum mechanics. QFT is …

I'm aware of Sidney Coleman's 1975/76 sequence of 54 lectures on Quantum Field Theory. Are there any other high-quality QFT lecture series available online?

Quantum field theory (QFT) is a theoretical framework for constructing quantum mechanical models of subatomic particles in particle physics and quasiparticles in condensed matter …

In 4d it is tested by triangle diagrams with three background fields. (Give us restrictions on the low-energy dynamics of our theory) • While anomalies in global symmetries are physically …

Jul 29, 2024 · Quantum Field Theory (QFT) faces significant challenges, particularly in dealing with non-perturbative phenomena such as bound states in QED with nuclei and confinement in …

Apr 7, 2023 · Is it the average energy of the field in that state or something like that? For example, if you find it useful, consider the scalar field $\langle \hat {\phi}\rangle$ or for quark fields …

Feb 1, 2024 · Quantum field theory is a ridiculously complex theory for a ridiculously simple phenomenology (no offense intended to either theorists or experimentalists here, the devil is in …

Dec 29, 2015 · No book on QFT is easy to read but the quantum field theory book by Weinberg is the entrance that explains most of the terms in a clear way. You need as background some …