4 papers
Spin polarisability of the nucleon at NLO in the chiral expansion
K. B. Vijaya Kumar, Judith A. McGovern, Michael C. Birse
We present a calculation of the fourth-order (NLO) contribution to spin-dependent forward Compton scattering in heavy-baryon chiral perturbation theory. No low-energy constants, ex…
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…
The Wilson Renormalisation Group Applied to the Potential in NN Scattering
Michael C. Birse, Judith A. McGovern, Keith G. Richardson
Nonrelativistic two-body scattering by a short-ranged potential is studied using the renormalisation group. Two fixed points are identified: a trivial one and one describing system…
Renormalisation and power counting in effective field theories for nucleon-nucleon scattering
Keith G. Richardson, Michael C. Birse, Judith A. McGovern
The renormalisation of NN scattering in theories with zero-range interactions is examined using a cut-off regularisation and taking the cut-off to infinity. Inclusion of contact in…