Feynman diagrams, ribbon graphs, and topological recursion of Eynard-Orantin
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DOI: 10.1007/jhep06(2018)162
Abstract: A bstractWe consider two seemingly unrelated problems, calculation of the WKB expansion of the harmonic oscillator wave functions and counting the number of Feynman diagrams in QED or in many-body physics and show that their… read more here.
Keywords: topological recursion; ribbon graphs; number; recursion eynard ... See more keywords