Dynamical mass generation in unquenched QED using the Dyson-Schwinger equations
Abstract
We present a comprehensive numerical study of dynamical mass generation for unquenched QED in four dimensions, in the absence of four-fermion interactions, using the Dyson-Schwinger approach. We begin with an overview of previous investigations of criticality in the quenched approximation. To this we add an analysis using a new fermion-antifermion-boson interaction ansatz, the Kizilersu-Pennington (KP) vertex, developed for an unquenched treatment. After surveying criticality in previous unquenched studies, we investigate the performance of the KP vertex in dynamical mass generation using a renormalized fully unquenched system of equations. This we compare with the results for two hybrid vertices incorporating the Curtis-Pennington vertex in the fermion equation. We conclude that the KP vertex is as yet incomplete, and its relative gauge-variance is due to its lack of massive transverse components in its design.
- Authors:
-
- Univ. of Adelaide, SA (Australia). Special Research Centre for the Subatomic Structure of Matter (CSSM)
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Univ. of Adelaide, SA (Australia). School of Chemistry and Physics, Centre of Excellence in Particle Physics at the Tera-scale (CoEPP) and Special Research Centre for the Subatomic Structure of Matter (CSSM)
- Univ. of Giessen (Germany). Inst. for Theoretical Physics
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Org.:
- Australian Research Council (Australia); Austrian Science Fund (FWF)
- OSTI Identifier:
- 1177478
- Alternate Identifier(s):
- OSTI ID: 1181620
- Report Number(s):
- JLAB/THY-14-1935; DOE/OR-23177-3193
Journal ID: ISSN 1550-7998; PRVDAQ; ArticleNumber: 065015
- Grant/Contract Number:
- LX 0776452; DP0558878; M1333-N16; AC05-06OR23177
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 6; Journal ID: ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; quark-gluon; QCD; QED; Quantum electrodynamics; Dyson-Schwinger equations (DSE); fermion; Quantum Chromodynamics
Citation Formats
Kızılersü, Ayse, Sizer, Tom, Pennington, Michael R., Williams, Anthony G., and Williams, Richard. Dynamical mass generation in unquenched QED using the Dyson-Schwinger equations. United States: N. p., 2015.
Web. doi:10.1103/PhysRevD.91.065015.
Kızılersü, Ayse, Sizer, Tom, Pennington, Michael R., Williams, Anthony G., & Williams, Richard. Dynamical mass generation in unquenched QED using the Dyson-Schwinger equations. United States. https://doi.org/10.1103/PhysRevD.91.065015
Kızılersü, Ayse, Sizer, Tom, Pennington, Michael R., Williams, Anthony G., and Williams, Richard. Fri .
"Dynamical mass generation in unquenched QED using the Dyson-Schwinger equations". United States. https://doi.org/10.1103/PhysRevD.91.065015. https://www.osti.gov/servlets/purl/1177478.
@article{osti_1177478,
title = {Dynamical mass generation in unquenched QED using the Dyson-Schwinger equations},
author = {Kızılersü, Ayse and Sizer, Tom and Pennington, Michael R. and Williams, Anthony G. and Williams, Richard},
abstractNote = {We present a comprehensive numerical study of dynamical mass generation for unquenched QED in four dimensions, in the absence of four-fermion interactions, using the Dyson-Schwinger approach. We begin with an overview of previous investigations of criticality in the quenched approximation. To this we add an analysis using a new fermion-antifermion-boson interaction ansatz, the Kizilersu-Pennington (KP) vertex, developed for an unquenched treatment. After surveying criticality in previous unquenched studies, we investigate the performance of the KP vertex in dynamical mass generation using a renormalized fully unquenched system of equations. This we compare with the results for two hybrid vertices incorporating the Curtis-Pennington vertex in the fermion equation. We conclude that the KP vertex is as yet incomplete, and its relative gauge-variance is due to its lack of massive transverse components in its design.},
doi = {10.1103/PhysRevD.91.065015},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 6,
volume = 91,
place = {United States},
year = {Fri Mar 13 00:00:00 EDT 2015},
month = {Fri Mar 13 00:00:00 EDT 2015}
}
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Works referencing / citing this record:
Natural constraints on the gluon-quark vertex
text, January 2016
- Binosi, Daniele; Chang, Lei; Papavassiliou, Joannis
- arXiv