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In quantum chromodynamics (QCD), the gluon condensate is a non-perturbative property of the QCD vacuum which could be partly responsible for giving masses to light mesons.
If the gluon field tensor is represented as Gμν, then the gluon condensate is the vacuum expectation value . It is not clear yet whether this condensate is related to any of the known phase changes in quark matter. There have been scattered studies of other types of gluon condensates, involving a different number of gluon fields.
. It is not clear yet whether this condensate is related to any of the known phase changes in For more on the context in which this quantity occurs, see the article on the QCD vacuum.
See also
- Quantum chromodynamics
- QCD vacuum and chiral condensates
- Vacuum in quantum field theory
- Quark–gluon plasma
- QCD matter
References
- Savvidy, G.K. (7 Nov 1977). "Infrared instability of the vacuum state of gauge theories and asymptotic freedom". Physics Letters B. 71 (1). Elsevier BV: 133–134. Bibcode:1977PhLB...71..133S. doi:10.1016/0370-2693(77)90759-6. ISSN 0370-2693.
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