Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-07-20
Eur.Phys.J.C7:355-362,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, Latex
Scientific paper
10.1007/s100529801004
A recently proposed super-heat-kernel technique is applied to heavy baryon chiral perturbation theory with two flavours. A previous result for the one-loop divergences of the pion-nucleon system is confirmed, giving at the same time an impressive demonstration of the efficiency of the new method. The cumbersome and tedious calculations of the conventional approach are now reduced to a few simple algebraic manipulations. The present computational scheme is not restricted to chiral perturbation theory, but can easily be applied or extended to any (in general non-renormalizable) theory with boson-fermion interactions.
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