Bruckmann, F. and Gattringer, C. and Ilgenfritz, E.-M. and Mueller-Preussker, M. and Schaefer, A. and Solbrig, S. (2007) Quantitative comparison of filtering methods in lattice QCD. EUROPEAN PHYSICAL JOURNAL A, 33 (4). pp. 333-338. ISSN 1434-6001,
Full text not available from this repository. (Request a copy)Abstract
We systematically compare filtering methods used to extract topological excitations (like instantons, calorons, monopoles and vortices) from lattice gauge configurations, namely APE-smearing and spectral decompositions based on lattice Dirac and Laplace operators. Each of these techniques introduces ambiguities, which can invalidate the interpretation of the results. We show, however, that all these methods, when handled with care, reveal very similar topological structures. Hence, these common structures are free of ambiguities and faithfully represent infrared degrees of freedom in the QCD vacuum. As an application we discuss an interesting power law for the clusters of filtered topological charge.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TOPOLOGICAL-STRUCTURE; FERMIONS; VACUUM; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 13:02 |
| Last Modified: | 01 Dec 2020 13:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32275 |
Actions (login required)
 |
View Item |
