18-21 February 2014
GSI
Europe/Berlin timezone

Worm algorithms: from loops to surfaces, from spin models to gauge theories

18 Feb 2014, 15:00
30m
KBW Lecture Hall (GSI)

KBW Lecture Hall

GSI

Planckstraße 1 64291 Darmstadt

Speaker

Prof. Ulli Wolff (HU Berlin)

Description

We discuss the obvious generalization of the successful 'worm' simulation methods from scalar field theories to abelian gauge models. Due to the geometrically different situation, gauge simulations along these lines (so-far) still suffer from critical slowing down. Other aspects like the low noise estimation of observables -- here the Polyakov lines and partition function ratios -- do generalize. We exploit these to compare the 3D Z(2) gauge theory with effective string models.

Presentation Materials