4 papers
Chiral symmetry restoration in excited hadrons, quantum fluctuations, and quasiclassics
L. Ya. Glozman, A. V. Nefediev, J. E. F. T. Ribeiro
In this paper, we discuss the transition to the semiclassical regime in excited hadrons, and consequently, the restoration of chiral symmetry for these states. We use a generalised…
Confinement and parity doubling in heavy-light mesons
Yu. S. Kalashnikova, A. V. Nefediev, J. E. F. T. Ribeiro
In this paper, we study the chiral symmetry restoration in the hadronic spectrum in the framework of generalised Nambu-Jona-Lasinio quark models with instantaneous confining quark…
Mesonic states and vacuum replicas in potential quark models for QCD
A. V. Nefediev, J. E. F. T. Ribeiro
In this paper, we study generic non-local NJL models for four-dimensional QCD in the limit of a large number of colours. We diagonalise, through a Bogoliubov-type transformation, t…
Field theory description of vacuum replicas
A. V. Nefediev, J. E. F. T. Ribeiro
In this paper we develop a systematic quantum field theory based approach to the vacuum replica recently found to exist in effective low energy models in hadronic physics. A local…