Journal Article

FZJ-2026-03080

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Continuum-extrapolated high-order baryon fluctuations

Borsányi, S. ; Fodor, Z. ; Guenther, J. N. ; Katz, S. D. ; Parotto, P. ; Pásztor, A. ; Pesznyák, D. ; Szabó, K. K.FZJ* ; Wong, C. H.

2024
American Physical Society Ridge, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevD.110.L011501  doi:10.34734/FZJ-2026-03080

Abstract: Fluctuations play a key role in the study of QCD phases. Lattice QCD is a valuable tool to calculate them, but going to high orders is challenging. Up to the fourth order, continuum results have been available since 2015. We present the first continuum results for sixth-order baryon fluctuations for temperatures between $𝑇 =130$ and 200 MeV and eighth order at $𝑇 =145$  MeV in a fixed volume. Comparison with earlier studies with imaginary chemical potential suggests that the volume effect is under control for $𝑇 <145$  MeV . Our results are in sharp contrast with well-known results in the literature obtained at finite lattice spacing.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)
2. 05P21PXFCA - Verbundprojekt 05P2021 (ErUM-FSP T06) - Aufbau von CBM bei FAIR: Compressed-Baryonic-Matter-Physik an FAIR: Gittersimulationen zur starken Wechselwirkung mit endlicher Baryonendichte (BMBF-05P21PXFCA) (BMBF-05P21PXFCA)
3. NRW-FAIR (NW21-024-A) (NW21-024-A)
4. DFG project G:(GEPRIS)496127839 - Phasendiagramm und Phenomenologie des QCD Übergangs (496127839) (496127839)

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