A Nonperturbative variational approach to the vacuum structure in QCD
Feb, 1990
12 pages
Published in:
- Pramana 37 (1991) 59-70
DOI:
Report number:
- IP-BBSR-90-33,
- IP-BBSR-90-5
Citations per year
Abstract: (Springer)
We study the vacuum structure in QCD in a nonperturbative manner using a variational approach with gluon condensates. We show that in Coulomb gauge as the coupling becomes moderately strong, the perturbative vacuum of QCD becomes unstable leading to gluon condensates and a gauge dependent effective mass for the gluons related to the gauge independent value of 〈vac‖GμνaGaμν‖vac〉 of Shifmanet al.- vacuum state: nonperturbative
- gluon: condensation
- gluon: mass
- mass: gluon
- Coulomb gauge
- energy: density
- mathematical methods: variational
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