Main Image
Volume 363 - 37th International Symposium on Lattice Field Theory (LATTICE2019) - Main session
Exploring the QCD phase diagram via reweighting from isospin chemical potential
B. Brandt, F. Cuteri, G. Endrodi, S. Schmalzbauer*
*corresponding author
Full text: pdf
Pre-published on: 2020 January 04
Published on:
Abstract
We investigate the QCD phase diagram for small values of baryon and strange quark chemical potentials from simulations at non-zero isospin chemical potential. Simulations at pure isospin chemical potential are not hindered by the sign problem and pion condensation can be observed for sufficiently large isospin chemical potentials. We study how the related phase boundary evolves with baryonic and strange chemical potentials via reweighting in quark chemical potentials and discuss our results. Furthermore, we propose and implement an alternative method to approach nonzero baryon (and strange quark) chemical potentials. This method involves simulations where physical quarks are paired with auxiliary quarks in unphysical ``isospin'' doublets and a decoupling of the auxiliary quarks by mass reweighting.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.