Showing papers by "Manfried Faber published in 1991"
20 May 1991
TL;DR: In this article, the authors compare electromagnetic field distributions around a static charge-anticharge system for compact U(1) and SU(3) lattice gauge theories and show that the energy density is restricted to a thin flux tube both in the SU (3) and U (1) case in the confinement regime.
Abstract: We compare electromagnetic field distributions around a static charge-anticharge system for compact U(1) and SU(3) lattice gauge theories. We display flux tube formation for both internal symmetry groups in the confinement phase and its breaking beyond the deconfinement phase transition. The dependence of the string width on the dipole elongation is studied and the roughening mechanism is explored. Our results suggest that the energy density is restricted to a thin flux tube both in the SU(3) and U(1) case in the confinement regime.
2 citations
TL;DR: In this article, the structure of the QCD vacuum was studied by analyzing the chiral condensate around static quark multiplets. Butler et al. found that the behavior of different multiplets seems to fit into a screening law with Casimir scaling.
2 citations
01 Aug 1991
TL;DR: In this article, the SU(3) gauge theory with dynamical fermions in the fundamental and adjoint representation was analyzed and it was shown that octet Fermions do not break the gluon string between static triplet charges.
Abstract: We analyze SU(3) gauge theory with dynamical fermions in the fundamental and adjoint representation. Our results show that octet fermions in contrary to triplet fermions do not break the gluon string between static triplet charges. This is demonstrated by investigating the polarization cloud around static mesons. As a consequence the quark-antiquark potential is linear for octet fermions and screened for triplet fermions.
01 Jan 1991
TL;DR: In this article, the authors performed an independent computation of a for time extension Nt = 2 and 4 and found that the interface tension vanishes for our volume within error bars and there are systematic deviations between the differential and integral method.
Abstract: There exist two calculations for the interface tension a of coexisting quark and hadron matter with two different methods. We perform an independent computation of a for time extension Nt = 2 and 4 and find that (i) the interface tension vanishes for our volume within error bars and (ii) there are systematic deviations between the differential and integral method.