Journal Article

PUBDB-2022-07562

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Topological susceptibility of N$_{f}$ = 2 + 1 QCD from staggered fermions spectral projectors at high temperatures

Athenodorou, A. ; Bonanno, C. (Corresponding author) ; Bonati, C. ; Clemente, G.DESY* ; D'Angelo, F. ; D'Elia, M. ; Maio, L. ; Martinelli, G. ; Sanfilippo, F. ; Todaro, A.

2022
SISSA [Trieste]

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Please use a persistent id in citations: doi:10.1007/JHEP10(2022)197  doi:10.3204/PUBDB-2022-07562

Report No.: arXiv:2208.08921

Abstract: We compute the topological susceptibility of N$_{f}$ = 2 + 1 QCD with physical quark masses in the high-temperature phase, using numerical simulations of the theory discretized on a space-time lattice. More precisely we estimate the topological susceptibility for five temperatures in the range from ∼ 200 MeV up to ∼ 600 MeV, adopting the spectral projectors definition of the topological charge based on the staggered Dirac operator. This strategy turns out to be effective in reducing the large lattice artifacts which affect the standard gluonic definition, making it possible to perform a reliable continuum extrapolation. Our results for the susceptibility in the explored temperature range are found to be partially in tension with previous determinations in the literature.

Keyword(s): susceptibility: topological ; temperature: high ; charge: topological ; fermion: staggered ; space-time: lattice ; operator: Dirac ; quark: mass ; spectral ; quantum chromodynamics ; tension ; numerical calculations ; Lattice QCD ; Vacuum Structure and Confinement ; Axions and ALPs ; CP Violation

Note: 33 pages, 33 eps figures, revised version matches published one (minor corrections)

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Contributing Institute(s):

1. NIC (ZEU-NIC)
2. Zeuthen Particle PhysicsTheory (Z_ZPPT)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2022

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Athenodorou, A. ; Bonanno, C. (Corresponding author) ; Bonati, C. ; Clemente, G.DESY* ; D'Angelo, F. ; D'Elia, M. ; Maio, L. ; Martinelli, G. ; Sanfilippo, F. ; Todaro, A.
Topological susceptibility of N$_{f}$ = 2 + 1 QCD from staggered fermions spectral projectors at high temperatures
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