5 papers · 1 filter
An Effective Field Theory for the Three-Body System
T. Barford, M. C. Birse
We study the scattering of a particle from a bound pair in an effective field theory using a distorted-wave renormalisation group method to find the power-counting for the three-bo…
Relativistic Faddeev approach to the NJL model at finite density
M. C. Birse, J. A. McGovern, S. Pepin +1
We study the nucleon solution of the relativistic Faddeev equation as a function of density in the framework of a generalized Nambu-Jona-Lasinio model. We truncate the interacting…
Chiral symmetry in matter
Michael C. Birse
Soft-pion theorems are used to show how chiral symmetry constrains the contributions of low-momentum pions to the quark condensate, the pion decay constant and hadron masses, all o…
Renormalising NN scattering: is power counting powerless?
Michael C. Birse
The renormalisation of NN scattering in theories with zero-range interactions is examined using a cut-off regularisation where the cut-off is taken to infinity, dimensional regular…
Chiral symmetry in nuclei
Michael C. Birse
The role of the quark condensate in low-energy QCD and its behaviour in nuclear matter are discussed. Partial restoration of chiral symmetry, as indicated by a reduction of the qua…