Quark chiral condensate from the overlap quark propagatorSupported by National Natural Science Foundation of China (11575197, 11575196, 11335001, 11405178), joint funds of NSFC (U1632104, U1232109), YC and ZL acknowledge the support of NSFC and DFG (CRC110)
Chao Wang (Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, China, School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.); Yujiang Bi (School of Physics and Technology, Wuhan University, Wuhan 430072, China); Hao Cai (School of Physics and Technology, Wuhan University, Wuhan 430072, China); Ying Chen (Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, China, School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.); Ming Gong (Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, China, School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.); et al - Show all 6 authors
From the overlap lattice quark propagator calculated in the Landau gauge, we determine the quark chiral condensate by fitting operator product expansion formulas to the lattice data. The quark propagators are computed on domain wall fermion configurations generated by the RBC-UKQCD Collaborations with Nf = 2+1 flavors. Three ensembles with different light sea quark masses are used at one lattice spacing 1/a = 1.75(4) GeV. We obtain in the SU(2) chiral limit.
