Rigorous reconstruction of gluon propagator in the presence of complex singularities
It has been suggested that the Landau-gauge gluon propagator has complex singularities, which invalidates the K\"all\'en-Lehmann spectral representation. Since such singularities are beyond the standard formalism of quantum field theory, the reconstruction of Minkowski propagators from...
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| Format: | Article |
| Language: | English |
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SciPost
2022-05-01
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| Series: | SciPost Physics Proceedings |
| Online Access: | https://scipost.org/SciPostPhysProc.6.017 |