150 citations · 304 across the 4 of their papers we have counts for
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Gauge Invariant Variational Approach with Fermions: the Schwinger Model
William E. Brown, Juan P. Garrahan, Ian I. Kogan +1
We extend the gauge invariant variational approach of Phys. Rev. D52 (1995) 3719, hep-th/9408081, to theories with fermions. As the simplest example we consider the massless Schwin…
Equivalence of the Beta-function of the Variational Approach to that of QCD
William E. Brown
The variational ansatz for the ground state wavefunctional of QCD is found to capture the anti-screening behaviour that contributes the dominant `-4' to the beta-function and leads…
A variational approach to the QCD wavefunctional: Calculation of the QCD beta-function
William E. Brown, Ian I. Kogan
The beta-function is calculated for an SU(N) Yang-Mills theory from an ansatz for the vacuum wavefunctional. Direct comparison is made with the results of calculations of the beta-…
Compact QED3 with theta term and axionic confining strings
William E. Brown, Ian I. Kogan
We discuss three dimensional compact QED with a theta term due to an axionic field. The variational gauge invariant functional is considered and it is shown that the ground state e…