The Bethe–Salpeter equation is one of the most appropriate tools in quantum field theory for the treatment of bound state systems. We review two problems in this approach: (i) the influence of the cross-ladder (non-planar) interaction kernel with color degrees of freedom in two-boson systems; and (ii) the higher Fock-state contributions to the three-boson bound state. Some new calculations have been performed to illustrate the previous topics.
Relativistic Studies of Few-Body Systems Using the Bethe–Salpeter Approach / Alvarenga Nogueira, J. H.; Ydrefors, E.; Frederico, T.; Salmè, G.. - In: FEW-BODY SYSTEMS. - ISSN 0177-7963. - 59:5(2018). [10.1007/s00601-018-1418-3]
Relativistic Studies of Few-Body Systems Using the Bethe–Salpeter Approach
J. H. Alvarenga NogueiraPrimo
;
2018
Abstract
The Bethe–Salpeter equation is one of the most appropriate tools in quantum field theory for the treatment of bound state systems. We review two problems in this approach: (i) the influence of the cross-ladder (non-planar) interaction kernel with color degrees of freedom in two-boson systems; and (ii) the higher Fock-state contributions to the three-boson bound state. Some new calculations have been performed to illustrate the previous topics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
