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arXiv · 0905.2511

Baby steps beyond rainbow-ladder

Richard Williams·Christian S. Fischer
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Abstract

We discuss the impact of including corrections beyond single gluon exchange in light mesons within the nonperturbative framework of Dyson-Schwinger equations (DSE) and Bethe-Salpeter equations (BSE). We do this by considering unquenching effects in the form of hadronic resonance contributions, notably pion exchange, and by the inclusion of the dominant gluon self-interactions to the quark-gluon vertex. Thus we make steps towards an ab initio description of light mesons by functional methods.

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Richard Williams, Christian S. Fischer. 2009-05-15. Baby steps beyond rainbow-ladder. https://arxiv.org/abs/0905.2511

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