335 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of CoimbraPT197 papers
- Universidade Federal de Santa CatarinaBR23 papers
- Instituto Superior TécnicoPT20 papers
- Joint Institute for Nuclear ResearchRU17 papers
- Centre National de la Recherche ScientifiqueFR14 papers
- University of LisbonPT12 papers
- Instituto Tecnológico de AeronáuticaBR8 papers
- Universidade Federal de Minas GeraisBR8 papers
- Universidade de São PauloBR7 papers
- Universidade Federal do ABCBR7 papers
- Bogolyubov Institute for Theoretical PhysicsUA6 papers
- Ghent UniversityBE6 papers
4 papers · 2 filters
From the Kappa via the Ds0*(2317) to the chi_c0: connecting light and heavy scalar mesons
Eef van Beveren, Joao E. G. N. Costa, Frieder Kleefeld +1
Pole trajectories connecting light and heavy scalar mesons, both broad resonances and quasi-bound states, are computed employing a simple coupled-channel model. Instead of varying…
Multi-quark interactions with a globally stable vacuum
Alexander A. Osipov, Brigitte Hiller, Joao da Providencia
It is shown that eight-quark interactions stabilize the asymmetric ground state of the well-known model with four-quark Nambu -- Jona-Lasinio and six-quark 't…
Aspects of U_A(1) breaking in the Nambu and Jona-Lasinio model
Alexander A. Osipov, Brigitte Hiller, Veronique Bernard +1
The six-quark instanton induced 't Hooft interaction, which breaks the unwanted U_A (1) symmetry of QCD, is a source of perturbative corrections to the leading order result formed…
Symmetries and Ambiguities in the linear sigma model with light quarks
E. W. Dias, Brigitte Hiller, A. L. Mota +3
We investigate the role of undetermined finite contributions generated by radiative corrections in a linear sigma model with quarks. Although some of such terms…