2024-03-29T08:42:39Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00009547
2023-01-16T03:55:05Z
336:695:696
Quasifermion spectrum at finite temperature from coupled Schwinger-Dyson equations for a fermion-boson system
Harada, Masayasu
Nemoto, Yukio
open access
American Physical Society, All rights reserved.
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.
American Physical Society
2008-07
eng
journal article
VoR
http://hdl.handle.net/2237/11340
https://nagoya.repo.nii.ac.jp/records/9547
https://doi.org/10.1103/PhysRevD.78.014004
1550-7998
PHYSICAL REVIEW D
78
1
014004
014004
https://nagoya.repo.nii.ac.jp/record/9547/files/PhysRevD_78_014004.pdf
application/pdf
799.0 kB
2018-02-20