The generalised infrared structure of the gluon propagator
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 mas...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-04-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269320301337 |
| _version_ | 1818602359165550592 |
|---|---|
| author | Shirley Weishi Li Peter Lowdon Orlando Oliveira Paulo J. Silva |
| author_facet | Shirley Weishi Li Peter Lowdon Orlando Oliveira Paulo J. Silva |
| author_sort | Shirley Weishi Li |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-16T13:06:01Z |
| format | Article |
| id | doaj.art-99502d5948eb40b19fd09723d1cb6b66 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-16T13:06:01Z |
| publishDate | 2020-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-99502d5948eb40b19fd09723d1cb6b662022-12-21T22:30:45ZengElsevierPhysics Letters B0370-26932020-04-01803The generalised infrared structure of the gluon propagatorShirley Weishi Li0Peter Lowdon1Orlando Oliveira2Paulo J. Silva3SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Rd, CA 94025, USACPHT, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau, France; Corresponding author.CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, PortugalCFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, PortugalGauge 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.http://www.sciencedirect.com/science/article/pii/S0370269320301337 |
| spellingShingle | Shirley Weishi Li Peter Lowdon Orlando Oliveira Paulo J. Silva The generalised infrared structure of the gluon propagator Physics Letters B |
| title | The generalised infrared structure of the gluon propagator |
| title_full | The generalised infrared structure of the gluon propagator |
| title_fullStr | The generalised infrared structure of the gluon propagator |
| title_full_unstemmed | The generalised infrared structure of the gluon propagator |
| title_short | The generalised infrared structure of the gluon propagator |
| title_sort | generalised infrared structure of the gluon propagator |
| url | http://www.sciencedirect.com/science/article/pii/S0370269320301337 |
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