Since the incident nuclei in heavy-ion collisions do not carry strangeness, the global net strangeness of the detected hadrons has to vanish. We investigate the impact of strangeness neutrality on the phase structure and thermodynamics of QCD at finite baryon and strangeness chemical potential. To this end, we study the low-energy sector of QCD within a Polyakov loop enhanced quark-meson effective theory with 2+1 dynamical quark flavors. Non-perturbative quantum, thermal, and density fluctuations are taken into account with the functional renormalization group. We show that the impact of strangeness neutrality on thermodynamic quantities such as the equation of state is sizable.
Cited by 4
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Konstantin Otto et al., Hybrid and quark star matter based on a nonperturbative equation of state
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M. Leonhardt et al., Symmetric Nuclear Matter from the Strong Interaction
Phys. Rev. Lett. 125, 142502 (2020) [Crossref]
Fei Gao et al., QCD phase structure from functional methods
Phys. Rev. D 102, 034027 (2020) [Crossref]
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- 1 Ruprecht-Karls-Universität Heidelberg / Heidelberg University
- 2 Brookhaven National Laboratory [BNL]