Influence of Fermion Velocity Renormalization on Dynamical Mass Generation in QED3
Influence of Fermion Velocity Renormalization on Dynamical Mass Generation in QED3
复制标题
费米子速度重整化对 QED3 动态质量生成的影响
DOI：
10.1088/0256-307x/29/5/057401
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发表时间：
2012
影响因子：
3.5
通讯作者：
Jing Wang
中科院分区：
文献类型：
--
作者：
Hao-Ran Chang;Jing-Rong Wang;Jing Wang
本文研究了（2 + 1）维量子电动力学中规范场与无质量狄拉克费米子和非相对论标量玻色子耦合的动态费米子质量产生。我们计算了费米子速度重整化，然后利用Dyson-Schwinger方程考察了它对动力学质量产生的影响。研究发现，只要玻色子压缩性参数λ足够小，即使在包含标量玻色子之后，也会产生动力学质量。此外，费米子速度重整化增强了动力学产生的质量。
We study dynamical fermion mass generation in (2 + 1)-dimensional quantum electrodynamics with a gauge field coupling to massless Dirac fermions and non-relativistic scalar bosons. We calculate the fermion velocity renormalization and then examine its influence on dynamical mass generation by using the Dyson—Schwinger equation. It is found that dynamical mass generation takes place even after including the scalar bosons as long as the bosonic compressibility parameter ξ is sufficiently small. In addition, the fermion velocity renormalization enhances the dynamically generated mass.