5 papers · 1 filter
Effective theories and hadronic bound states
A. Rusetsky
Recent progress in the description of the properties of hadronic atoms on the basis of non-relativistic effective Lagrangian approach and Chiral Perturbation Theory (ChPT) is repor…
Theory of the pi+ pi- atom
M. A. Ivanov, V. E. Lyubovitskij, E. Z. Lipartia +1
The relativistic perturbative approach based on the Bethe-Salpeter (BS) equation is developed for the study of the characteristics of the hadronic pi+ pi- atom. The general express…
pi+pi- Atom in Chiral Theories
M. A. Ivanov, V. E. Lyubovitskij, E. Z. Lipartia +1
We review the existing theoretical approaches to the study of the observables of hadronic atoms. In the relativistic perturbative approach based on the Bethe-Salpeter equation and…
Perturbative framework for the study of the properties of the pi(+)pi(-) atom
V. E. Lyubovitskij, E. Z. Lipartia, A. G. Rusetsky
The perturbative framework is developed for the calculation of the pi(+)pi(-) atom characteristics (energy level shift and lifetime) on the basis of the field-theoretical Bethe-Sal…
The Dynamical Retardation Corrections to the Mass Spectrum of Heavy Quarkonia
Teimuraz Kopaleishvili, Akaki Rusetsky
A new version for the relativistic generalization of the wide class of static quark--antiquark confining potentials is suggested. The comparison of this approach with other ones, k…