https://doi.org/10.1140/epja/s10050-020-00326-2
Regular Article – Theoretical Physics
Lattice study of QCD at finite chiral density: topology and confinement
1
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
a
nikita.astrakhantsev@physik.uzh.ch
Received:
22
July
2020
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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