2019/11/27 by Bastian B. Brandt, Francesca Cuteri, Brandt, Bastian B. +5 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Theoretical and Computational Physics
paper · pdf · doi:10.48550/arxiv.1911.12197
openalex publication_date 2019/11/27 · openalex created_date 2022/07/19 · openalex updated_date 2026/07/28
We investigate the QCD phase diagram for small values of baryon and strange\nquark chemical potentials from simulations at non-zero isospin chemical\npotential. Simulations at pure isospin chemical potential are not hindered by\nthe sign problem and pion condensation can be observed for sufficiently large\nisospin chemical potentials. We study how the related phase boundary evolves\nwith baryonic and strange chemical potentials via reweighting in quark chemical\npotentials and discuss our results. Furthermore, we propose and implement an\nalternative method to approach nonzero baryon (and strange quark) chemical\npotentials. This method involves simulations where physical quarks are paired\nwith auxiliary quarks in unphysical "isospin" doublets and a decoupling of the\nauxiliary quarks by mass reweighting.\n