Unbreaking chiral symmetry

被引：36

作者：

Lang, C. B. ^{[1
]}

Schroeck, Mario ^{[1
]}

机构：

[1] Graz Univ, FB Theoret Phys, Inst Phys, A-8010 Graz, Austria

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 08期

基金：

奥地利科学基金会;

关键词：

EXACTLY MASSLESS QUARKS; MESON 2-POINT FUNCTIONS; LATTICE; RESTORATION;

D O I：

10.1103/PhysRevD.84.087704

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In quantum chromodynamics (QCD) the eigenmodes of the Dirac operator with small absolute eigenvalues have a close relationship to the dynamical breaking of the chiral symmetry. In a simulation with two dynamical quarks, we study the behavior of meson propagators when removing increasingly more of those modes in the valence sector, thus partially removing effects of chiral symmetry breaking. We find that some of the symmetry aspects are restored (e.g., the masses of rho and a(1) approach each other) while confining properties persist.

引用

页数：5

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