A nonperturbative variational approach to the vacuum structure in quantum chromodynamics |
| |
| Authors: | A Mishra H Mishra S P Misra S N Nayak |
| |
| Institution: | (1) Physics Department, Utkal University, 751 004 Bhubaneswar, India;(2) Institute of Physics, 751 005 Bhubaneswar, India |
| |
| Abstract: | 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‖G
μν
a
G
aμν‖vac〉 of Shifmanet al. |
| |
| Keywords: | Quantum chromodynamics vacuum structure phase transition Bogoliubov transformation variational methods |
| 本文献已被 SpringerLink 等数据库收录！ |
