164 citations · 1.3k across the 51 of their papers we have counts for
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hep-ph2005★ 26 cited
Renormalization of a gapless Hartree-Fock approximation to a theory with spontaneously broken O(N)-symmetry
Yu. B. Ivanov, F. Riek, H. van Hees +1
The renormalization of a gapless Phi-derivable Hartree--Fock approximation to the O(N)-symmetric lambda*phi^4 theory is considered in the spontaneously broken phase. This kind of a…
hep-ph2005★ 50 cited
Gapless Hartree-Fock Resummation Scheme for the O(N) Model
Yu. B. Ivanov, F. Riek, J. Knoll
A modified selfconsistent Hartree-Fock approximation to the lambda*phi^4 theory with spontaneously broken O(N) symmetry is proposed. It preserves all the desirable features, like c…