Criterion for dynamical chiral symmetry breaking

被引：0

作者：

Jain, Bithika ^{[1
]}

Mitra, Indrajit ^{[2
]}

Sharatchandra, H. S. ^{[3
]}

机构：

[1] St Xavier Coll, Mahapalika Marg, Bombay 400001, Maharashtra, India

[2] Saha Inst Nucl Phys, Theory Grp, Kolkata 700064,, India

[3] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

来源：

THEORETICAL HIGH ENERGY PHYSICS | 2007年 / 939卷

关键词：

Bethe-Salpeter equation; dynamical chiral symmetry breaking;

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The Bethe-Salpeter equation for massless fermions is related to a generalized quantum-mechanical Hamiltonian. The presumed vacuum is unstable when this Hamiltonian possesses a negative energy eigenstate. It is shown that an arbitrarily weak long-range attraction leads to chiral symmetry breaking, except in the scale-invariant case when the instability occurs at a critical value of the coupling. For the case of short-range attraction, an upper bound for the critical coupling is obtained.

引用

页码：355 / +

页数：2

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