I was reading [this stack overflow answer](https://physics.stackexchange.com/a/474126/26466) which mentioned the “trace anomaly” in Quantum Chromodynamics. I tried reading [the wikipedia page](https://en.wikipedia.org/wiki/Conformal_anomaly) but it’s pretty much entirely over my head. I took physics in college but all of the math jargon of quantum mechanics is beyond me.
In: Physics
While quantum chromodynamics (QCD) expressed via its Lagrangian density for quark-physics looks clasically like a conformal field theory, a quantum anomaly in the trace of its energy momentum tensor (conformal anomaly) breaks conformal invariance as a quantum field theory.
Latest Answers