11–13 Dec 2019
Salone degli Affreschi, Palazzo Ateneo Università "Aldo Moro" Bari
Europe/Rome timezone
SM&FT 2019 Challenges in Computational Theoretical Physics

Topology via Spectral Projectors with Staggered Fermions

13 Dec 2019, 12:45
15m
Salone degli Affreschi, Palazzo Ateneo Università "Aldo Moro" Bari

Salone degli Affreschi, Palazzo Ateneo Università "Aldo Moro" Bari

Piazza Umberto I, 1 Bari

Speaker

Claudio Bonanno (PI)

Description

Spectral projectors on the eigenmodes of the Dirac operator can be used to derive a fermionic lattice definition of the topological charge. Studying the renormalization properties of the lattice charge, we extend the spectral projectors definition of the topological susceptibility to the case of staggered fermions. Besides, we also generalize the spectral method to any higher-order cumulant of the topological charge. Finally, we present results obtained in the quenched case for the topological susceptibility and for the fourth cumulant, as well as some preliminary results in full QCD.

Primary authors

Claudio Bonanno (PI) Francesco Sanfilippo (INFN - Sezione Roma III) Giuseppe Clemente (PI) Massimo D'Elia (PI)

Presentation materials