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The dependence of overlap topological charge density on Wilson mass parameter
- Source :
- Chinese Physics
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- In this paper, we analyze the dependence of the topological charge density from the overlap operator on the Wilson mass parameter in the overlap kernel by the symmetric multi-probing source (SMP) method. We observe that the non-trivial topological objects are removed as the Wilson mass is increased. A comparison of topological charge density calculated by the SMP method using fermionic definition with that of gluonic definition by the Wilson flow method is shown. A matching procedure for these two methods is used. We find that there is a best match for topological charge density between gluonic definition with varied Wilson flow time and fermionic definition with different Wilson mass. By using the matching procedure, the proper flow time of Wilson flow in the calculation of topological charge density can be estimated. As the lattice spacing $a$ decreases, the proper flow time also decreases, as expected.<br />Comment: The title changed, some sections deleted and some sections updated. To be published in Chinese Physics C
- Subjects :
- Physics
Nuclear and High Energy Physics
Matching (graph theory)
010308 nuclear & particles physics
Operator (physics)
High Energy Physics::Lattice
High Energy Physics - Lattice (hep-lat)
FOS: Physical sciences
Astronomy and Astrophysics
01 natural sciences
Lattice constant
High Energy Physics - Lattice
Flow (mathematics)
Kernel (statistics)
0103 physical sciences
010306 general physics
Instrumentation
Mass parameter
Flow time
Topological quantum number
Mathematical physics
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Chinese Physics
- Accession number :
- edsair.doi.dedup.....1f436271c2dce2b9a3a79c7ba70f98c8
- Full Text :
- https://doi.org/10.48550/arxiv.2011.00908