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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Dynamical mass generation for fermions in quenched quantum electrodynamics at finite temperature
Physical Review D - Particles, Fields, Gravitation and Cosmology, Volume 67, No. 7, Year 2003
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Description
We study the dynamical generation of masses for fundamental fermions in quenched quantum electrodynamics (QQED) at finite temperature in the bare vertex approximation, using Schwinger-Dyson equations (SDE’s). Motivated by perturbation theory, a further simplification is introduced by taking the wave function renormalization to be unity. In the zeroth mode approximation, the SDE for the fermion propagator resembles QED in 2+1 dimensions [Formula Presented] at zero temperature with an effective dimensionful coupling [Formula Presented] For a fixed temperature, the mass is dynamically generated above a certain critical value of this coupling. As expected, raising the temperature restores chiral symmetry and fermions become massless again. We also argue that by summing over the frequency modes and under suitable simplifications, qualitative aspects of the result do not undergo significant changes. © 2003 The American Physical Society.
Authors & Co-Authors
Ayala, Alejandro
Mexico, Mexico
Universidad Nacional Autónoma de México
Bashir, Adnan
Mexico, Morelia
Universidad Michoacana de San Nicolás de Hidalgo
Statistics
Citations: 12
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1103/PhysRevD.67.076005
ISSN:
15507998
Study Approach
Qualitative