Journal Article

FZJ-2026-03612

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The QCD crossover line in a finite volume

Borsányi, S. (Corresponding author) ; Fodor, Z.FZJ* ; Guenther, J. N. ; Parotto, P. ; Pásztor, A. ; Pirelli, L. ; Szabó, K. K.FZJ* ; Wong, C. H.

2025
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.procs.2025.08.229  doi:10.34734/FZJ-2026-03612

Abstract: We compute the crossover line of strongly interacting matter in the temperature ($T$) - baryo-chemical potential ($µ_B$) plane of the QCD phase diagram. We use large scale lattice QCD simulations at vanishing $µ_B$ to solve the path integral in the transition regime between $T$ = 120 and 200 MeV. We introduce a high order Taylor scheme for the Polyakov loop and extract the static quark entropy. The peak position of the latter defines the transition line that we can extract up to 400 MeV in $µ_B$. For the simulations the 4HEX staggered action was used with 2+1 flavors at physical quark masses.

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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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