@article{oai:nagoya.repo.nii.ac.jp:00009547,
author = {Harada, Masayasu and Nemoto, Yukio},
issue = {1},
journal = {PHYSICAL REVIEW D},
month = {Jul},
note = {We nonperturbatively investigate a fermion spectrum at finite temperature in a chiral invariant linear sigma model. Coupled Schwinger-Dyson equations for fermion and boson are developed in the real time formalism and solved numerically. From the coupling of a massless fermion with a massive boson, the fermion spectrum shows a three-peak structure at some temperatures even for the strong coupling region. This means that the three-peak structure which was originally found in the one-loop calculation is stable against higher order corrections even in the strong coupling region.},
pages = {014004--014004},
title = {Quasifermion spectrum at finite temperature from coupled Schwinger-Dyson equations for a fermion-boson system},
volume = {78},
year = {2008}
}