With complex Langevin towards the QCD phase diagram

2021/11/03 by Felipe Attanasio, Benjamin Jäger, Attanasio, Felipe +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Theoretical and Computational Physics

paper · pdf · doi:10.48550/arxiv.2111.02241

openalex publication_date 2021/11/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 m_N/3, in line with the expectations from the Silver Blaze phenomenon.

Related

• QCD equation of state via the complex Langevin method
• Complex Langevin for Lattice QCD at T=0 and μ≥ 0
• Exploring Complex-Langevin Methods for Finite-Density QCD
• On the validity of the complex Langevin method near the deconfining phase transition in QCD at finite density
• Applying Complex Langevin to Lattice QCD at finite μ