The QCD vacuum is the vacuum state of quantum chromodynamics (QCD). It is an example of a non-perturbative vacuum state, characterized by many non-vanishing condensates such as the gluon condensate or the quark condensate. These condensates characterize the normal phase or the confined phase of quark matter.
| QCD in the non-perturbative regime:
confinement. The equations of QCD remain unsolved at energy scales relevant for describing atomic nuclei. How does QCD give rise to the physics of nuclei and nuclear constituents? |
Another field-theoretic vacuum is the QED vacuum of quantum electrodynamics.
Read more about QCD Vacuum: Models of The QCD Vacuum
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