Beyond the rainbow: effects from pion back-coupling

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dc.creatorFischer, Christian S.
dc.creatorWilliams, Richard
dc.date2008-08-25
dc.date2008-09-30
dc.date.accessioned2026-07-07T11:45:37Z
dc.date.available2026-07-07T11:45:37Z
dc.descriptionWe investigate hadronic unquenching effects in light quarks and mesons. To this end we take into account the back-coupling of the pion onto the quark propagator within the non-perturbative continuum framework of Schwinger-Dyson equations (SDE) and Bethe-Salpeter equations (BSE). We improve on a previous approach by explicitly solving both the coupled system of DSEs and BSEs in the complex plane and the normalisation problem for Bethe-Salpeter kernels depending on the total momentum of the meson. As a result of our study we find considerable unquenching effects in the spectrum of light pseudoscalar, vector and axial-vector mesons.
dc.description9 pages, 5 figures. Minor typos corrected. Version to appear in PRD
dc.identifierhttps://arxiv.org/abs/0808.3372
dc.identifierhttp://arxiv.org/abs/0808.3372
dc.identifierPhys.Rev.D78:074006,2008
dc.identifierdoi:10.1103/PhysRevD.78.074006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201940
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleBeyond the rainbow: effects from pion back-coupling
dc.typetext

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