Resummed lattice QCD equation of state at finite baryon density: Strangeness neutrality and beyond

Szabolcs Borsányi; Jana N. Guenther; Ruben Kara; Zoltán Fodor; Paolo Parotto; Attila Pásztor; Claudia Ratti; Kálmán Szabó

doi:10.1103/PhysRevD.105.114504

Resummed lattice QCD equation of state at finite baryon density: Strangeness neutrality and beyond

Szabolcs Borsányi, Jana N. Guenther, Ruben Kara, Zoltán Fodor, Paolo Parotto, Attila Pásztor, Claudia Ratti, Kálmán Szabó

Physics

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Abstract

We calculate a resummed equation of state with lattice QCD simulations at imaginary chemical potentials. This work presents a generalization of the scheme introduced in [Phys. Rev. Lett. 126, 232001 (2021)PRLTAO0031-900710.1103/PhysRevLett.126.232001 to the case of nonzero μS, focusing on the line of strangeness neutrality. We present results up to μB/T≤3.5 on the strangeness neutral line S=0 in the temperature range 130 MeV≤T≤280 MeV. We also extrapolate the finite baryon density equation of state to small nonzero values of the strangeness-to-baryon ratio R=S/B. We perform a continuum extrapolation using lattice simulations of the 4stout-improved staggered action with 8, 10, 12 and 16 time slices.

Original language	English (US)
Article number	114504
Journal	Physical Review D
Volume	105
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.105.114504
State	Published - Jun 1 2022

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevD.105.114504

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title = "Resummed lattice QCD equation of state at finite baryon density: Strangeness neutrality and beyond",

abstract = "We calculate a resummed equation of state with lattice QCD simulations at imaginary chemical potentials. This work presents a generalization of the scheme introduced in [Phys. Rev. Lett. 126, 232001 (2021)PRLTAO0031-900710.1103/PhysRevLett.126.232001 to the case of nonzero μS, focusing on the line of strangeness neutrality. We present results up to μB/T≤3.5 on the strangeness neutral line S=0 in the temperature range 130 MeV≤T≤280 MeV. We also extrapolate the finite baryon density equation of state to small nonzero values of the strangeness-to-baryon ratio R=S/B. We perform a continuum extrapolation using lattice simulations of the 4stout-improved staggered action with 8, 10, 12 and 16 time slices.",

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T2 - Strangeness neutrality and beyond

AU - Borsányi, Szabolcs

AU - Guenther, Jana N.

AU - Kara, Ruben

AU - Fodor, Zoltán

AU - Parotto, Paolo

AU - Pásztor, Attila

AU - Ratti, Claudia

AU - Szabó, Kálmán

PY - 2022/6/1

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AB - We calculate a resummed equation of state with lattice QCD simulations at imaginary chemical potentials. This work presents a generalization of the scheme introduced in [Phys. Rev. Lett. 126, 232001 (2021)PRLTAO0031-900710.1103/PhysRevLett.126.232001 to the case of nonzero μS, focusing on the line of strangeness neutrality. We present results up to μB/T≤3.5 on the strangeness neutral line S=0 in the temperature range 130 MeV≤T≤280 MeV. We also extrapolate the finite baryon density equation of state to small nonzero values of the strangeness-to-baryon ratio R=S/B. We perform a continuum extrapolation using lattice simulations of the 4stout-improved staggered action with 8, 10, 12 and 16 time slices.

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Resummed lattice QCD equation of state at finite baryon density: Strangeness neutrality and beyond

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