Regular Article – Theoretical Physics
Lattice study of QCD at finite chiral density: topology and confinement
Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
2 National University of Science and Technology MISIS, Leninsky Prospect 4, 119049, Moscow, Russia
3 Moscow Institute of Physics and Technology, Institutsky lane 9, 141700, Dolgoprudny, Russia
4 Institute for Theoretical and Experimental Physics NRC “Kurchatov Institute”, 117218, Moscow, Russia
5 Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Russia
6 Julich Supercomputing Centre, Forschungszentrum Julich, 52428, Julich, Germany
7 Department of Physics, College of Science, Swansea University, SA2 8PP, Swansea, UK
Accepted: 6 December 2020
Published online: 8 January 2021
In this paper we study the properties of QCD at nonzero chiral density , which is introduced through chiral chemical potential . The study is performed within lattice simulation of QCD with dynamical rooted staggered fermions. We first check that is generated at nonzero and in the chiral limit observe . We also test the possible connection between confinement and topological fluctuations. To this end, we measured the topological susceptibility and string tension for various values of . We observed that string tension grows with . It seems that topological susceptibility also rises with , but to state this more reliably the uncertainties should be reduced. We believe that our results indicate possible connection between topological fluctuations and the strength of confinement.
© The Author(s) 2021
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