The chiral condensate of Nf=2+1 QCD from the spectrum of the staggered Dirac operator

被引：3

作者：

Bonanno, Claudio ^{[1
]}

D'Angelo, Francesco ^{[2
,3
]}

D'Elia, Massimo ^{[2
,3
]}

机构：

[1] Univ Autonoma Madrid, Inst Fis Teor UAM CSIC, C Nicolas Cabrera 13-15, E-28049 Madrid, Spain

[2] Univ Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Italy

[3] INFN Sez Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 2023卷 / 11期

关键词：

Chiral Symmetry; Lattice QCD; Vacuum Structure and Confinement; PERTURBATION-THEORY; TOPOLOGICAL CHARGE; SYMMETRY-BREAKING; LATTICE; INSTANTONS; MASS;

D O I：

10.1007/JHEP11(2023)013

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We compute the chiral condensate of 2 + 1 QCD from the mode number of the staggered Dirac operator, performing controlled extrapolations to both the continuum and the chiral limit. We consider also alternative strategies, based on the quark mass dependence of the topological susceptibility and of the pion mass, and obtain consistent results within errors. Results are also consistent with phenomenological expectations and with previous numerical determinations obtained with different lattice discretizations.

引用

页数：33

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