With complex Langevin towards the QCD phase diagram

Felipe Attanasio; Benjamin Jäger; Felix P.G. Ziegler

doi:10.22323/1.396.0137

With complex Langevin towards the QCD phase diagram

Felipe Attanasio, Benjamin Jäger, Felix P.G. Ziegler

Department of Mathematics and Computer Science

Heidelberg University

Research output: Contribution to journal › Conference article › Research › peer-review

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Abstract

We use complex Langevin simulations to explore the QCD phase diagram over a large range of chemical potentials and temperatures. For our simulations we use two flavours of dynamical Wilson fermions with a pion mass of approximately 480 MeV with a spatial volume of 24³. Here we report on consistency checks at zero chemical potentials and present our results for the fermion density and the Polyakov loop. We find that at the lowest temperature the fermion density remains zero until mN/3, in line with the expectations from the Silver Blaze phenomenon.

Original language	English
Article number	137
Journal	Proceedings of Science
Volume	396
ISSN	1824-8039
DOIs	https://doi.org/10.22323/1.396.0137
Publication status	Published - 8. Jul 2022
Event	38th International Symposium on Lattice Field Theory, LATTICE 2021 - Virtual, Online, United States Duration: 26. Jul 2021 → 30. Jul 2021

Conference

Conference	38th International Symposium on Lattice Field Theory, LATTICE 2021
Country/Territory	United States
City	Virtual, Online
Period	26/07/2021 → 30/07/2021

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10.22323/1.396.0137Licence: CC BY-NC-ND

Open access versionFinal published version, 468 KBLicence: CC BY-NC-ND

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title = "With complex Langevin towards the QCD phase diagram",

abstract = "We use complex Langevin simulations to explore the QCD phase diagram over a large range of chemical potentials and temperatures. For our simulations we use two flavours of dynamical Wilson fermions with a pion mass of approximately 480 MeV with a spatial volume of 243. Here we report on consistency checks at zero chemical potentials and present our results for the fermion density and the Polyakov loop. We find that at the lowest temperature the fermion density remains zero until mN/3, in line with the expectations from the Silver Blaze phenomenon.",

author = "Felipe Attanasio and Benjamin J{\"a}ger and Ziegler, {Felix P.G.}",

note = "Funding Information: The work of F.A. was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany{\textquoteright}s Excellence Strategy EXC2181/1 - 390900948 (the Heidelberg STRUCTURES Excellence Cluster) and under the Collaborative Research Centre SFB 1225 (ISO-QUANT). This work was performed using PRACE resources at Hawk (Stuttgart) with project ID 2018194714. This work used the DiRAC Extreme Scaling service at the University of Edinburgh, operated by the Edinburgh Parallel Computing Centre on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment was funded by BEIS capital funding via STFC capital grant ST/R00238X/1 and STFC DiRAC Operations grant ST/R001006/1. DiRAC is part of the National e-Infrastructure. Publisher Copyright: {\textcopyright} Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0); 38th International Symposium on Lattice Field Theory, LATTICE 2021 ; Conference date: 26-07-2021 Through 30-07-2021",

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T1 - With complex Langevin towards the QCD phase diagram

AU - Attanasio, Felipe

AU - Jäger, Benjamin

AU - Ziegler, Felix P.G.

N1 - Funding Information: The work of F.A. was supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy EXC2181/1 - 390900948 (the Heidelberg STRUCTURES Excellence Cluster) and under the Collaborative Research Centre SFB 1225 (ISO-QUANT). This work was performed using PRACE resources at Hawk (Stuttgart) with project ID 2018194714. This work used the DiRAC Extreme Scaling service at the University of Edinburgh, operated by the Edinburgh Parallel Computing Centre on behalf of the STFC DiRAC HPC Facility (www.dirac.ac.uk). This equipment was funded by BEIS capital funding via STFC capital grant ST/R00238X/1 and STFC DiRAC Operations grant ST/R001006/1. DiRAC is part of the National e-Infrastructure. Publisher Copyright: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0)

PY - 2022/7/8

Y1 - 2022/7/8

N2 - We use complex Langevin simulations to explore the QCD phase diagram over a large range of chemical potentials and temperatures. For our simulations we use two flavours of dynamical Wilson fermions with a pion mass of approximately 480 MeV with a spatial volume of 243. Here we report on consistency checks at zero chemical potentials and present our results for the fermion density and the Polyakov loop. We find that at the lowest temperature the fermion density remains zero until mN/3, in line with the expectations from the Silver Blaze phenomenon.

AB - We use complex Langevin simulations to explore the QCD phase diagram over a large range of chemical potentials and temperatures. For our simulations we use two flavours of dynamical Wilson fermions with a pion mass of approximately 480 MeV with a spatial volume of 243. Here we report on consistency checks at zero chemical potentials and present our results for the fermion density and the Polyakov loop. We find that at the lowest temperature the fermion density remains zero until mN/3, in line with the expectations from the Silver Blaze phenomenon.

U2 - 10.22323/1.396.0137

DO - 10.22323/1.396.0137

M3 - Conference article

AN - SCOPUS:85134434296

SN - 1824-8039

VL - 396

JO - P o S - Proceedings of Science

JF - P o S - Proceedings of Science

M1 - 137

T2 - 38th International Symposium on Lattice Field Theory, LATTICE 2021

Y2 - 26 July 2021 through 30 July 2021

ER -

With complex Langevin towards the QCD phase diagram

Abstract

Conference

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