QCD thermodynamics with O(a) improved Wilson fermions at Nf=2

2013/10/30 by Bastian B. Brandt, Anthony Francis, Brandt, Bastian B. +7 · 2 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1310.8326

openalex publication_date 2013/10/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present an update of our study of the phase diagram of two-flavour QCD at zero baryon density with dynamical O(a) improved Wilson quarks. All simulations are done on lattices with a temporal extent of N_t=16 and spatial extent L=32,48 and 64, ensuring that discretisation effects are small and finite size effects can be controlled. In the approach to the chiral limit we currently have three scans with pion masses between 540 and 200 MeV. In this proceedings article the focus is on the new scan at m_π=200 MeV and the measurement of screening masses. We also present first results concerning a test of scaling in the approach to the chiral limit and the chiral extrapolation of the difference of screening masses in scalar and pseudoscalar channels, which provides a measure for the strength of the anomalous breaking of the U_A(1) symmetry.

Citations

• Two-flavour lattice QCD correlation functions in the deconfinement\n transition region

Cited by

• QCD at non-zero temperature and magnetic field
• On the axial U(1) symmetry at finite temperature

Related

• QCD thermodynamics with two flavours of Wilson fermions on large lattices
• Testing the strength of the U_A(1) anomaly at the chiral phase transition in two-flavour QCD
• The Phase Diagram of 2 flavour QCD with improved Actions
• Towards the continuum limit with improved Wilson fermions employing open boundary conditions
• Approaching the chiral point in two-flavour lattice simulations