A Combinatorial Perspective on Quantum Field Theory
Cham : Springer International Publishing : Imprint: Springer, 2017
Abstract/Sommario:
This book explores combinatorial problems and insights in quantum field theory. It is not comprehensive, but rather takes a tour, shaped by the author’s biases, through some of the important ways that a combinatorial perspective can be brought to bear on quantum field theory. Among the outcomes are both physical insights and interesting mathematics. The book begins by thinking of perturbative expansions as kinds of generating functions and then introduces renormalization Hopf algebras. ...; [leggi tutto]
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Descrizione | A Combinatorial Perspective on Quantum Field Theory / by Karen Yeats. - Cham : Springer International Publishing : Imprint: Springer, 2017. - IX, 120 p. 16 illus ; online resource. - (SpringerBriefs in Mathematical Physics ; 15) |
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Part I Preliminaries -- Introduction -- Quantum field theory set up -- Combinatorial classes and rooted trees -- The Connes-Kreimer Hopf algebra -- Feynman graphs -- Part II Dyson-Schwinger equations -- Introduction to Dyson-Schwinger equations -- Sub-Hopf algebras from Dyson-Schwinger equations -- Tree factorial and leading log toys -- Chord diagram expansions -- Differential equations and the (next-to)m leading log expansion -- Part III Feynman periods -- Feynman integrals and Feynman periods -- Period preserving graph symmetries -- An invariant with these symmetries -- Weight -- The c2 invariant -- Combinatorial aspects of some integration algorithms -- Index. - Springer eBooks. - Printed edition: 9783319475509
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ID scheda | 139362 |
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