Comparison of different lattice definitions of the topological charge

Cichy, Krzysztof; Dromard, Arthur; Garcia-Ramos, Elena; Ottnad, Konstantin; Urbach, Carsten; Wagner, Marc; Wenger, Urs; Zimmermann, Falk (2015). Comparison of different lattice definitions of the topological charge. PoS - proceedings of science, LATTICE2014, p. 75. Scuola Internazionale Superiore di Studi Avanzati SISSA

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We present a comparison of different definitions of the topological charge on the lattice, using a small-volume ensemble with 2 flavours of dynamical twisted mass fermions. The investigated definitions are: index of the overlap Dirac operator, spectral projectors, spectral flow of the HermitianWilson- Dirac operator and field theoretic with different kinds of smoothing of gauge fields (HYP and APE smearings, gradient flow, cooling). We also show some results on the topological susceptibility.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

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

UniBE Contributor:

Wenger, Urs

Subjects:

500 Science > 530 Physics

ISSN:

1824-8039

Publisher:

Scuola Internazionale Superiore di Studi Avanzati SISSA

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

06 May 2016 15:11

Last Modified:

06 May 2016 15:11

BORIS DOI:

10.7892/boris.80342

URI:

https://boris.unibe.ch/id/eprint/80342

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