Heavy Particle Effective Field Theories
Abstract
Starting from a theory of heavy particles and antiparticles, the path integral formulation of an effective field theory which describes the low momentum interactions is presented. The heavy degrees of freedom are identified and explicitly integrated out from the functional integral of the full theory. Using this method, the effective Lagrangian, which may be calculated to arbitrary subleading order in an inverse mass expansion, is derived for fields of spin0, 1/2, and 1.
 Publication:

arXiv eprints
 Pub Date:
 September 1997
 DOI:
 10.48550/arXiv.hepph/9709237
 arXiv:
 arXiv:hepph/9709237
 Bibcode:
 1997hep.ph....9237L
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 LaTeX, 17 pages