Berlin 2005 – scientific programme

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T: Teilchenphysik

T 707: QCD III

T 707.4: Talk

Wednesday, March 9, 2005, 14:45–15:00, TU H2037

Finite Temperature Phase Transition from SU(3) Vortex Structures — •Kurt Langfeld, Markus Quandt, and Hugo Reinhardt — Institute for Theoretical Physics, University of Tuebingen, D-72076 Tuebingen

The deconfinement transition at finite temperatures is investigated by using SU(3) lattice gauge simulations. Two different definitions of the underlying vortex structures are studied: Vortices arising from center projection after fixing to (i) the Laplacian Center Gauge and (ii) the Maximal Center Gauge. It is shown that the vortex configurations reproduce the deconfinement temperature. In addition, the vortex structures correctly reflect the first order nature of the transition. This observation falls into place with the findings in SU(2) gauge theory where vortex percolation explains the second order nature of the transition.