Equation of state and speed of sound of isospin-asymmetric QCD on the lattice

Brandt B, Cuteri F, Endrödi G (2023)
Journal of High Energy Physics (7): 55.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
OA 2.17 MB
Abstract / Bemerkung
We determine the QCD equation of state at nonzero temperature in the presence of an isospin asymmetry between the light quark chemical potentials on the lattice. Our simulations employ N-f = 2 + 1 flavors of dynamical staggered quarks at physical masses, using three different lattice spacings. The main results, obtained at the individual lattice spacings, are based on a two-dimensional spline interpolation of the isospin density, from which all relevant quantities can be obtained analytically. In particular, we present results for the pressure, the interaction measure, the energy and entropy densities, as well as the speed of sound. Remarkably, the latter is found to exceed its ideal gas limit deep in the pion condensed phase, the first account of the violation of this limit in first principles QCD. Finally, we also compute the phase diagram in the temperature - isospin density plane for the first time. Even though the results are not continuum extrapolated and thus not final, the data for all observables will be useful for the benchmarking of effective theories and low-energy models of QCD and are provided in ancillary files for simple reuse.
Stichworte
Non-Zero Temperature and Density; Phase Diagram or Equation of State; Early Universe Particle Physics; Phase Transitions
Erscheinungsjahr
2023
Zeitschriftentitel
Journal of High Energy Physics
Ausgabe
7
Art.-Nr.
55
eISSN
1029-8479
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2981957

Zitieren

Brandt B, Cuteri F, Endrödi G. Equation of state and speed of sound of isospin-asymmetric QCD on the lattice. Journal of High Energy Physics. 2023;(7): 55.
Brandt, B., Cuteri, F., & Endrödi, G. (2023). Equation of state and speed of sound of isospin-asymmetric QCD on the lattice. Journal of High Energy Physics(7), 55. https://doi.org/10.1007/JHEP07(2023)055
Brandt, Bastian, Cuteri, F., and Endrödi, Gergely. 2023. “Equation of state and speed of sound of isospin-asymmetric QCD on the lattice”. Journal of High Energy Physics, no. 7: 55.
Brandt, B., Cuteri, F., and Endrödi, G. (2023). Equation of state and speed of sound of isospin-asymmetric QCD on the lattice. Journal of High Energy Physics:55.
Brandt, B., Cuteri, F., & Endrödi, G., 2023. Equation of state and speed of sound of isospin-asymmetric QCD on the lattice. Journal of High Energy Physics, (7): 55.
B. Brandt, F. Cuteri, and G. Endrödi, “Equation of state and speed of sound of isospin-asymmetric QCD on the lattice”, Journal of High Energy Physics, 2023, : 55.
Brandt, B., Cuteri, F., Endrödi, G.: Equation of state and speed of sound of isospin-asymmetric QCD on the lattice. Journal of High Energy Physics. : 55 (2023).
Brandt, Bastian, Cuteri, F., and Endrödi, Gergely. “Equation of state and speed of sound of isospin-asymmetric QCD on the lattice”. Journal of High Energy Physics 7 (2023): 55.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Creative Commons Namensnennung 4.0 International Public License (CC-BY 4.0):
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2024-05-27T13:19:37Z
MD5 Prüfsumme
13906b086ddf9e89e9609a99dd03252c


Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®
Suchen in

Google Scholar