Perturbative Renormalisation for Not-Quite-Connected Bialgebras
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Perturbative Renormalisation for Not-Quite-Connected Bialgebras. / Kock, Joachim.
In: Letters in Mathematical Physics, Vol. 105, No. 10, 10.2015, p. 1413-1425.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Perturbative Renormalisation for Not-Quite-Connected Bialgebras
AU - Kock, Joachim
PY - 2015/10
Y1 - 2015/10
N2 - We observe that the Connes-Kreimer Hopf-algebraic approach to perturbative renormalisation works not just for Hopf algebras but more generally for filtered bialgebras B with the property that B (0) is spanned by group-like elements (e.g. pointed bialgebras with the coradical filtration). Such bialgebras occur naturally both in quantum field theory, where they have some attractive features, and elsewhere in combinatorics, where they cover a comprehensive class of incidence bialgebras. In particular, the setting allows us to interpret Mobius inversion as an instance of renormalisation.
AB - We observe that the Connes-Kreimer Hopf-algebraic approach to perturbative renormalisation works not just for Hopf algebras but more generally for filtered bialgebras B with the property that B (0) is spanned by group-like elements (e.g. pointed bialgebras with the coradical filtration). Such bialgebras occur naturally both in quantum field theory, where they have some attractive features, and elsewhere in combinatorics, where they cover a comprehensive class of incidence bialgebras. In particular, the setting allows us to interpret Mobius inversion as an instance of renormalisation.
KW - perturbative renormalisation
KW - bialgebras
KW - DYSON-SCHWINGER EQUATIONS
KW - HOPF-ALGEBRAS
KW - FEYNMAN GRAPHS
KW - TREES
U2 - 10.1007/s11005-015-0785-7
DO - 10.1007/s11005-015-0785-7
M3 - Journal article
VL - 105
SP - 1413
EP - 1425
JO - Letters in Mathematical Physics
JF - Letters in Mathematical Physics
SN - 0377-9017
IS - 10
ER -
ID: 331498927