Speaker
Antonio Gonzalez-Arroyo
(Instituto de Fisica Teorica UAM/CSIC)
Description
We report results obtained for SU(2) Yang-Mills theory on a 4d torus with two directions much smaller than the other two. The small 2-torus is equipped with twisted boundary conditions. This construction provides a way to interpolate from a region in which semiclassical methods can be applied (for small 2-torus size) to the standard infinite volume case. Our simulations at small torus sizes show how the topological charge and the string tension result from a gas of vortex-like fractional instantons. As the size becomes larger the density increases in agreement with fractional instanton liquid model picture of the Yang-Mills vacuum.
Authors
Antonio Gonzalez-Arroyo
(Instituto de Fisica Teorica UAM/CSIC)
Georg Bergner
(University of Jena)
Ivan Soler
(University of Pisa)
