Quark chiral condensate from the overlap quark propagator

Chao Wang; Yujiang Bi; Hao Cai; Ying Chen; Ming Gong; Zhaofeng Liu

doi:10.1088/1674-1137/41/5/053102

Chinese Physics C> 2017, Vol. 41> Issue(5) : 053102 DOI: 10.1088/1674-1137/41/5/053102

Quark chiral condensate from the overlap quark propagator

Chao Wang ^1,2,, ,
Yujiang Bi ³ ,
Hao Cai ³ ,
Ying Chen ^1,2 ,
Ming Gong ^1,2 ,
Zhaofeng Liu ^1,2,,

1.
Institute of High Energy Physics and Theoretical Physics Center for Science Facilities,Chinese Academy of Sciences, Beijing 100049, China
2.
School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
3.
School of Physics and Technology, Wuhan University, Wuhan 430072, China

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Abstract：
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 N_f=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 <ψψ>^MS(2 GeV)=(-304(15)(20) MeV)³ in the SU(2) chiral limit.
- quark propagator ,
- quark chiral condensate ,
- overlap fermions ,
- Landau gauge ,
- lattice QCD

References

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Chao Wang, Yujiang Bi, Hao Cai, Ying Chen, Ming Gong and Zhaofeng Liu. Quark chiral condensate from the overlap quark propagator[J]. Chinese Physics C, 2017, 41(5): 053102. doi: 10.1088/1674-1137/41/5/053102

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Received: 2016-12-21

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Supported 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)

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沈阳化工大学材料科学与工程学院沈阳 110142

Quark chiral condensate from the overlap quark propagator

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Quark chiral condensate from the overlap quark propagator

Corresponding author: Chao Wang,

Corresponding author: Zhaofeng Liu,

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