Papers › Repulsive baryonic interactions and lattice QCD observables at imaginary chemical potential
Repulsive baryonic interactions and lattice QCD observables at imaginary chemical potential
Volodymyr Vovchenko, Attila Pasztor, Zoltan Fodor, Sandor D. Katz, Horst Stoecker
The archive published only this paper's code-link row. Authors, date and abstract are from arXiv's metadata (CC0), read from the Kaggle arXiv metadata snapshot of 2026-09-12 where its title matched the archive's; the title is the archive's.
The first principle lattice QCD methods allow to calculate the thermodynamic observables at finite temperature and imaginary chemical potential. These can be compared to the predictions of various phenomenological models. We argue that Fourier coefficients with respect to imaginary baryochemical potential are sensitive to modeling of baryonic interactions. As a first application of this sensitivity, we consider the hadron resonance gas (HRG) model with repulsive baryonic interactions, which are modeled by means of the excluded volume correction. The Fourier coefficients of the imaginary part of the net-baryon density at imaginary baryochemical potential -- corresponding to the fugacity or virial expansion at real chemical potential -- are calculated within this model, and compared with the Nₜ = 12 lattice data. The lattice QCD behavior of the first four Fourier coefficients up to T ≃185 MeV is described fairly well by an interacting HRG with a single baryon-baryon eigenvolume interaction parameter b ≃1 fm³, while the available lattice data on the difference χ₂ᴮ - χ₄ᴮ of baryon number susceptibilities is reproduced up to T ≃175 MeV.
Code
Repository list and official/mentioned flags are the archive's, frozen 2025-07-28. Reachability, where shown, is from one Syntology probe window (2026-09-16 to 2026-09-18); repositories not probed show nothing. GitHub stars are not tracked.
Code Syntology ran Syntology
Not run by Syntology. Nothing on this page verifies that the listed code works.
Results from the paper archive 2025-07-28
No leaderboard rows for this paper in the archive.
Report a problem or propose a change · a person checks every report against the paper or source before anything changes; decisions are listed on /corrections