Equal Time Commutators, Sum Rules and Low Energy Pion Physics
A fruitful advance in our understanding elementary particle physics has been achieved through current algebras . This approach is characterized first of all by the choice of currents as fundamental quantities in describing the weak and electromagnetic interactions of hadrons. Then a very attractive suggestion follows in order to establish a bridge between the observable hadron currents and symmetry operators of the theory: according to Gell-Mann we identify the charges (associated to those vector and axial vector currents) with the generators of the SU(3) × SU(3) group *.
KeywordsCurrent Algebra Mass Pion Equal Time Commutator Soft Pion Field Algebra
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- 1.An exhaustive bibliography on the subject can be found in the recent monographies: B. Renner: “Current algebras and their applications” Pergamon Press (1968)Google Scholar
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- 6.The content of this Section is based on the paper “Equal time commutators and low energy pion physics” V. de Alfaro, S. Fubini, G. Furlan, C. Rossetti, Inst. f. Adv. Study preprint, Princeton.Google Scholar
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