Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/81243
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Type: | Journal article |
Title: | Strongly-coupled unquenched QED₄ propagators using Schwinger-Dyson equations |
Other Titles: | Strongly-coupled unquenched QED(4) propagators using Schwinger-Dyson equations |
Author: | Kizilersu, A. Sizer, T. Williams, A. |
Citation: | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2013; 88(4):1-48 |
Publisher: | American Physical Society |
Issue Date: | 2013 |
ISSN: | 1550-7998 1550-2368 |
Statement of Responsibility: | Ayşe Kızılersü, Tom Sizer, and Anthony G. Williams |
Abstract: | We study unquenched QED in four dimensions using renormalized Schwinger-Dyson equations and focus on the behaviour of the fermion and photon propagators. For this purpose we use an improved Kızılersü-Pennington (KP) vertex which respects gauge invariance, multiplicative renormalizability for the massless case, agrees with perturbation theory in the weak coupling regime, and is free of kinematic singularities. We find that the KP vertex performs very well as expected especially in comparison with other vertex choices. We find that the Landau pole problem familiar from perturbative QED persists in the nonperturbative case with the renormalized inverse photon propagator having zero crossing. |
Rights: | © 2013 American Physical Society |
DOI: | 10.1103/PhysRevD.88.045008 |
Grant ID: | http://purl.org/au-research/grants/arc/DP0558878 http://purl.org/au-research/grants/arc/LX0776452 |
Published version: | http://dx.doi.org/10.1103/physrevd.88.045008 |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
Files in This Item:
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hdl_81243.pdf | Published version | 2.44 MB | Adobe PDF | View/Open |
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