Retrieving "Hadronic Mass" from the archives

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1. Quark Condensate

   Linked via "hadronic mass"

   The quark condensate ($\langle \bar{\psi} \psi \rangle$) is a fundamental, non-perturbative phenomenon within Quantum Chromodynamics (QCD)/) that describes the spontaneous condensation of quark-antiquark pairs ($\bar{q}q$) in the quantum vacuum state ${[1]}$, even in the absence of external fields or temperature fluctuations. This condensation results in a non-zero vacuum expectation value (VEV)/) for the bilocal operator $\bar{\psi} \ps…