Comparison of Different Boost Transformations for the Calculation of Form Factors in Relativistic Quantum Mechanics

  • L. Theußl
  • A. Amghar
  • B. Desplanques
  • S. Noguera
Part of the Few-Body Systems book series (FEWBODY, volume 14)


The effect of different boost expressions, pertinent to the instant, front and point forms of relativistic quantum mechanics, is considered for the calculation of the ground-state form factor of a two-body system in simple scalar models. Results with a Galilean boost as well as an explicitly covariant calculation based on the Bethe-Salpeter approach are given for comparison. It is found that the present so-called point-form calculations of form factors strongly deviate from all the other ones. This suggests that the formalism which underlies them requires further elaboration. A proposition in this sense is made.


Form Factor Point Form Mass Operator Relativistic Quantum Mechanic Nucleon Form Factor 


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Copyright information

© Springer-Verlag/Wien 2003

Authors and Affiliations

  • L. Theußl
    • 1
  • A. Amghar
    • 2
  • B. Desplanques
    • 3
  • S. Noguera
    • 1
  1. 1.Departamento de Fisica TeoricaUniversidad de ValenciaBurjassot (Valencia)Spain
  2. 2.Faculté des SciencesUniversité de BoumerdesBoumerdesAlgeria
  3. 3.Institut des Sciences Nucléaires (UMR CNRS/IN2P3-UJF)Grenoble CedexFrance

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