# Gluon condensate

If the gluon field tensor is represented as Gμν, then the gluon condensate is the vacuum expectation value $\langle G_{\mu\nu}G^{\mu\nu}\rangle$. It is not clear yet whether this condensate is related to any of the known phase changes[which?] in quark matter. There have been scattered studies of other types of gluon condensates, involving a different number of gluon fields.