scholarly journals Renormalization in Combinatorially Non-Local Field Theories: the BPHZ Momentum Scheme

Author(s):  
Johannes Thürigen ◽  
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Various combinatorially non-local field theories are known to be renormalizable. Still, explicit calculations of amplitudes are very rare and restricted to matrix field theory. In this contribution I want to demonstrate how the BPHZ momentum scheme in terms of the Connes-Kreimer Hopf algebra applies to any combinatorially non-local field theory which is renormalizable. This algebraic method improves the understanding of known results in noncommutative field theory in its matrix formulation. Furthermore, I use it to provide new explicit perturbative calculations of amplitudes in tensorial field theories of rank r>2.

1960 ◽  
Vol 16 (4) ◽  
pp. 671-682 ◽  
Author(s):  
E. Arnous ◽  
W. Heitler ◽  
Y. Takahashi

Pramana ◽  
2005 ◽  
Vol 64 (3) ◽  
pp. 333-341 ◽  
Author(s):  
Mahendra K. Verma

1991 ◽  
Vol 06 (11) ◽  
pp. 1011-1021 ◽  
Author(s):  
J.W. MOFFAT

A unified electroweak theory is formulated using non-local field theory without including a Higgs particle. The W and Z gauge boson masses are induced from one-loop vacuum polarization graphs and the non-local weak scale is determined by the W boson mass and the Fermi constant to be Λw=424 GeV . The tree graphs for the gauge bosons are identical to those of the standard local electroweak theory, so any violation of locality occurs only at the quantum level for the finite loop graphs. The fermion masses are obtained from a four-Fermi interaction with a spontaneously broken vacuum based on the fermion condensate [Formula: see text]. The problem of severe fine tuning for the quark condensates in the standard local point field theory is avoided in our non-local field theory. The theory contains only the known particle spectrum of leptons, quarks, the anticipated top quark, the W and Z gauge bosons and the photon. The quark condensates could generate a spectrum of heavy vector bound states at an energy scale ~1−2 TeV .


1954 ◽  
Vol 12 (5) ◽  
pp. 815-816 ◽  
Author(s):  
J. Rayski

1950 ◽  
Vol 80 (6) ◽  
pp. 1053-1061 ◽  
Author(s):  
D. R. Yennie

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