Renormalization group approach to the interacting boson fermion systems
Superconductivity
2016-08-31 v1
Abstract
We study a pseudogap region of the mixed boson fermion system using a recent formulation of the renormalization group technique through the set of infinitesimal unitary transformations. Renormalization of fermion energies gives rise to a depletion of the low energy states (pseudogap) for temperatures which foreshadows appearance of the pairwise correlations with their long range phase coherence being missed. With a help of the flow equations for boson and fermion operators we analyze spectral weights and finite life times of these quasiparticles caused by interactions.
Cite
@article{arxiv.cond-mat/0202010,
title = {Renormalization group approach to the interacting boson fermion systems},
author = {T. Domanski and J. Ranninger},
journal= {arXiv preprint arXiv:cond-mat/0202010},
year = {2016}
}
Comments
5 pages, 4 figures. Acta Physica Polonica B (to appear)