Influence of topology on the scale setting

Bergner, Georg; Montvay, I.; Giudice, P.; Münster, G.; Piemonte, S. (2015). Influence of topology on the scale setting. European physical journal - plus, 130(11) EDP Sciences 10.1140/epjp/i2015-15229-7

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Recently a new method to set the scale in lattice gauge theories, based on the gradient flow generated by the Wilson action, has been proposed, and the systematic errors of the new scales t0 and w0 have been investigated by various groups. The Wilson flow provides also an interesting alternative smoothing procedure particularly useful for the measurement of the topological charge as a pure gluonic observable. We show the viability of this method for N=1 supersymmetric Yang-Mills theory by analysing the configurations produced by the DESY-Muenster Collaboration. The relation between the scale and the topological charge has been investigated showing a strong correlation. We have found that the scale has a linear dependence on the topological charge, the slope of which increases decreasing the volume and the gluino mass. Moreover we have investigated this dependence as a function of the reference parameter used to define the scale: the tuning of this parameter turns out to be fundamental for a more reliable scale setting. Similar conclusions hold for the Sommer parameter r0.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Bergner, Georg

Subjects:

500 Science > 530 Physics

ISSN:

2190-5444

Publisher:

EDP Sciences

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

16 Feb 2016 16:35

Last Modified:

19 Feb 2016 00:55

Publisher DOI:

10.1140/epjp/i2015-15229-7

ArXiv ID:

arXiv:1411.6995v1

BORIS DOI:

10.7892/boris.75460

URI:

https://boris.unibe.ch/id/eprint/75460

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