Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2007-09-21
Phys.Rev.D77:054501,2008
Physics
High Energy Physics
High Energy Physics - Lattice
13 pages, 10 .eps figures. V2: conclusions extended
Scientific paper
10.1103/PhysRevD.77.054501
We consider two very different models of the flux tube linking two heavy quarks: a string linking the matter fields and a Coulombic description of two separately gauge invariant charges. We compare how close they are to the unknown true ground state in compact U(1) and the SU(2) Higgs model. Simulations in compact U(1) show that the string description is better in the confined phase but the Coulombic description is best in the deconfined phase; the last result is shown to agree with analytical calculations. Surprisingly in the non-abelian theory the Coulombic description is better in both the Higgs and confined phases. This indicates a significant difference in the width of the flux tubes in the two theories.
Heinzl Thomas
Ilderton Anton
Langfeld Kurt
Lavelle Martin
Lutz Wolfgang
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