The European Physical Journal A

, Volume 31, Issue 4, pp 616–619 | Cite as

Retardation effects in the rotating string model

  • F. BuisseretEmail author
  • C. Semay
  • V. Mathieu
QNP 2006


A new method to study the retardation effects in mesons is presented. It is based on a generalized rotating string model, in which a nonzero value of the relative time between the quark and the antiquark is allowed. This approach leads to a retardation term in the Hamiltonian which behaves as a perturbation of the nonretarded Hamiltonian and preserves the Regge trajectories for light mesons. The straight-line ansatz is used to describe the string, and the relevance of this approximation is tested. It is shown that the string is actually curved because of retardation, but this bending does not bring a relevant contribution to the energy spectrum of the model.


12.39.Ki Relativistic quark model 12.39.Pn Potential models 14.40.-n Mesons 


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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Groupe de Physique Nucléaire ThéoriqueUniversité de Mons-Hainaut, Académie universitaire Wallonie-BruxellesMonsBelgium

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