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https://hdl.handle.net/10316/106552| Title: | The generalised infrared structure of the gluon propagator | Authors: | Li, Shirley Weishi Lowdon, Peter Oliveira, Orlando Silva, Paulo J. |
Keywords: | High Energy Physics - Theory; High Energy Physics - Lattice; High Energy Physics - Phenomenology | Issue Date: | 23-Jul-2019 | Publisher: | Elsevier | Project: | S. Li was supported by the U.S. Department of Energy under contract DE–AC02–76SF00515, and P. Lowdon by the Agence Na-tionale de la Recherche under project No. ANR–18–ERC1–0002. P.J. Silva acknowledges support from FCT under the contracts SFRH/BPD/40998/2007 and SFRH/BPD/109971/2015, and both O. Oliveira and P.J. Silva acknowledge support from FCT under the contracts UID/FIS/04564/2016 and CERN/FIS-COM/0029/2017. This work was granted access to the HPC resources of the PDC Cen-ter for High Performance Computing at the KTH Royal Institute of Technology, Sweden, made available within the Distributed Eu-ropean Computing Initiative by the PRACE-2IP, receiving fund-ing from the European Community’s Seventh Framework Pro-gramme (FP7/2007-2013) under grand agreement no. RI-283493. The use of Lindgren has been provided under DECI-9 project COIM-BRALATT. We acknowledge that the results of this research have been achieved using the PRACE-3IP project (FP7 RI312763) re-source Sisu based in Finland at CSC. The use of Sisu has been provided under DECI-12 project COIMBRALATT2. We also acknowl-edge the Laboratory for Advanced Computing at the University of Coimbra (http://www.uc .pt /lca) for providing access to the HPC re-source Navigator. | Serial title, monograph or event: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Volume: | 803 | Abstract: | Gauge theory correlators are potentially more singular in the infrared than those in non-gauge theories. We determine the implications that these singularities have on the spectrum of the theory, proving that the appearance of generalised poles implies the existence of on-shell states with fixed mass, but zero norm. For quantum chromodynamics these poles have direct relevance for the confinement of coloured states. Using lattice data for the Landau gauge gluon propagator we subsequently test for the presence of these poles, establishing that the data is indeed consistent with such a component. | Description: | 12 pages, 2 figures; v2: additional comments and figure added, matches published version | URI: | https://hdl.handle.net/10316/106552 | ISSN: | 03702693 | DOI: | 10.1016/j.physletb.2020.135329 | Rights: | openAccess |
| Appears in Collections: | I&D CFis - Artigos em Revistas Internacionais |
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| The generalised infrared structure of the gluon propagator.pdf | 372.5 kB | Adobe PDF | View/Open |
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