Electromagnetic mass differences, equal-time commutators, and oscillating spectral functions

  • J. Sucher
Chiral Symmetry Currents and Current Algebras


A connection is suggested between the ambiguities in the definition of the equal-time commutator\([J_\mu ^{em} (0,\vec x),J_v^{em} (0)]\) and the experimental indications of an exponentially falling electromagnetic form factor for the nucleon. On this basis, a resolution is proposed of the difficulty of current algebra models which appear to give divergent expressions for the electromagnetic mass shifts of hadrons.


Spectral Function Current Algebra Jeta Forro Factor Seagull Term 
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Разности электромагнитных масс, коммутаторы при равных временах и осциллирующие спектральные функции


Рассматривается соотношение между двусмысленностью в определении коммутатора при равных временах\([J_\mu ^{em} (0,\vec x),J_v^{em} (0)]\) и экспериментальными индикациями экспоненциально падающего электромагнитного форм-фактора для нуклона. На базе этого предлагается разрешение трудности модели алгебры токов, результирующей расходимые выражения для сдвигов электромагнитных масс гадронов.


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Copyright information

© with the authors 1969

Authors and Affiliations

  • J. Sucher
    • 1
  1. 1.Center for Theoretical Physics, Department of Physics and AstronomyUniversity of MarylandCollege ParkUSA

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