Tuesday, March 20, 2012

1203.4068 (Hao-Ran Chang et al.)

Fermion Velocity Renormalization on Dynamical Mass Generation in QED$_3$    [PDF]

Hao-Ran Chang, Jing-Rong Wang, Jing Wang
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 $\xi$ is sufficiently small. In addition, the fermion velocity renormalization enhances the dynamically generated mass.
View original: http://arxiv.org/abs/1203.4068

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