Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/113630
DC Field | Value | Language |
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dc.contributor.author | Lessa, José Roberto | - |
dc.contributor.author | Serna, Fernando E. | - |
dc.contributor.author | El-Bennich, Bruno | - |
dc.contributor.author | Bashir, Adnan | - |
dc.contributor.author | Oliveira, Orlando | - |
dc.date.accessioned | 2024-02-23T11:20:10Z | - |
dc.date.available | 2024-02-23T11:20:10Z | - |
dc.date.issued | 2022-02-24 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.issn | 2470-0029 | - |
dc.identifier.uri | https://hdl.handle.net/10316/113630 | - |
dc.description | 8 pages, 5 figures, 1 table, version accepted for publication in PRD | pt |
dc.description.abstract | We study the gauge dependence of the quark propagator in quantum chromodynamics by solving the gap equation with a nonperturbative quark-gluon vertex which is constrained by longitudinal and transverse Slavnov-Taylor identities, the discrete charge conjugation and parity symmetries and which is free of kinematic singularities in the limit of equal incoming and outgoing quark momenta. We employ gluon propagators in renormalizable $R_\xi$ gauges obtained in lattice QCD studies. We report the dependence of the nonperturbative quark propagator on the gauge parameter, in particular we observe an increase, proportional to the gauge-fixing parameter, of the mass function in the infrared domain, whereas the wave renormalization decreases within the range $0 \leq \xi \leq 1$ considered here. The chiral quark condensate reveals a mild gauge dependence in the region of $\xi$ investigated. We comment on how to build and improve upon this exploratory study in future in conjunction with generalized gauge covariance relations for QCD. | pt |
dc.description.sponsorship | The work of A. B. is supported in part by the US Department of Energy (DOE) Contract No. DE-AC05- 06OR23177, under which Jefferson Science Associates, LLC operates Jefferson Lab. It received funds from the Coordinación de la Investigación Científica (CIC) of the University of Michoacán through Grant No. 4.10. B. E. receives financial support from the Brazilian agencies FAPESP, Grant No. 2018/20218-4, and CNPq, Grant No. 428003/2018-4. F. E. S. is a Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)- Programa de Desenvolvimento da Pós-Graduação (PNPD) postdoctoral fellow, Grant No. 88882.314890/2013-01. J. R. S. was supported by a CAPES PhD fellowship. O. O. acknowledges support from FCT, Portugal, Projects No. UID/FIS/04564/2019 and No. UID/FIS/04564/2020. This work is part of the network project INCT-Física Nuclear e Aplicações, Grant No 464898/2014-5. | pt |
dc.language.iso | eng | pt |
dc.publisher | American Physical Society | pt |
dc.relation | UID/FIS/04564/2019 | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | High Energy Physics - Phenomenology | pt |
dc.subject | High Energy Physics - Lattice | pt |
dc.subject | Nuclear Theory | pt |
dc.title | Gauge dependence of the quark gap equation: an exploratory study | pt |
dc.type | article | pt |
degois.publication.firstPage | 074017 | pt |
degois.publication.issue | 7 | pt |
degois.publication.title | Physical Review D | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1103/PhysRevD.107.074017 | - |
degois.publication.volume | 107 | pt |
dc.date.embargo | 2022-02-24 | * |
dc.identifier.url | http://arxiv.org/abs/2202.12313v2 | - |
uc.date.periodoEmbargo | 0 | pt |
item.fulltext | Com Texto completo | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
crisitem.author.orcid | 0000-0001-8266-3796 | - |
Appears in Collections: | I&D CFis - Artigos em Revistas Internacionais |
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Gauge-dependence-of-the-quark-gap-equation-An-exploratory-studyPhysical-Review-D.pdf | 918.43 kB | Adobe PDF | View/Open |
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