Göttingen 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 23: Gittereichtheorie
T 23.3: Vortrag
Donnerstag, 1. März 2012, 17:15–17:30, VG 3.101
Confining dyon gas with finite-volume effects under control — •Benjamin Maier1, Falk Bruckmann2, Simon Dinter1,3, Ernst-Michael Ilgenfritz1,4, Michael Müller-Preußker1, and Marc Wagner1,5 — 1Humboldt-Universität zu Berlin, Institut für Physik, Newtonstr. 15, D-12489 Berlin, Germany — 2Universität Regensburg, Institut für Theoretische Physik, D-93040 Regensburg, Germany — 3NIC, DESY Zeuthen, Platanenallee 6, D-15738 Zeuthen, Germany — 4Joint Institute for Nuclear Research, VBLHEP, 141980 Dubna, Russia — 5Goethe-Universität Frankfurt am Main, Institut für Theoretische Physik, Max-von-Laue-Straße 1, D-60438 Frankfurt am Main, Germany
As an approach to describe the long-range properties of non-Abelian gauge theories at non-zero temperature T < Tc, we consider a non-interacting ensemble of dyons (magnetic monopoles) with non-trivial holonomy. We show analytically, that the quark-antiquark free energy from the Polyakov loop correlator grows linearly with the distance, and how the string tension scales with the dyon density. In numerical treatments, the long-range tails of the dyon fields cause severe finite-volume effects. Therefore, we demonstrate the application of Ewald’s summation method to this system. Finite-volume effects are shown to be under control, which is a crucial requirement for numerical studies of interacting dyon ensembles.