Abstract for seminar by Dr Ernst-Michael Ilgenfritz


Dr Ernst-Michael Ilgenfritz
Humboldt University, Berlin

Thursday, November 8th

Seminar Room, First Floor, Physics, University of Adelaide



Vacuum structure from filtering with the overlap operator



I report on recent experience of analysing different aspects of the vacuum structure of Yang-Mills theory by means of the overlap Dirac operator. I shall discuss (1) the measuring of the topological susceptibility, (2) the chiral and localization properties of the eigenmodes, (3) the features of the topological density with and without UV filtering including the topological two-point function, (4) the possibility to define an UV filtered field strength and to define approximately selfdual domains, (5) the role of variable boundary conditions for the Dirac operator for the spectrum and the filtered topological charge density at finite temperature and (6) the effect of eliminating confining defects (monopoles and vortices as detected in the respective Abelian projections) from the lattice configurations.


Click here to go back to seminars page