379 research outputs found
The Nambu-Jona-Lasinio model of light nuclei
The Nambu-Jona-Lasinio model of the deuteron suggested by Nambu and
Jona-Lasinio (Phys. Rev. 124 (1961) 246) is formulated from the first
principles of QCD. The deuteron appears as a neutron-proton collective
excitation, i.e. a Cooper np-pair, induced by a phenomenological local
four-nucleon interaction in the nuclear phase of QCD. The model describes the
deuteron coupled to itself, nucleons and other particles through one-nucleon
loop exchanges providing a minimal transfer of nucleon flavours from initial to
final nuclear states and accounting for contributions of nucleon-loop anomalies
which are completely determined by one-nucleon loop diagrams. The dominance of
contributions of nucleon-loop anomalies to effective Lagrangians of low-energy
nuclear interactions is justified in the large N_C expansion, where N_C is the
number of quark colours.Comment: 39 pages, 2 Postscript figures, Late
Dynamics of low-energy nuclear forces for electromagnetic and weak reactions with the deuteron in the Nambu-Jona-Lasinio model of light nuclei
A dynamics of low-energy nuclear forces is investigated for low-energy
electromagnetic and weak nuclear reactions with the deuteron in the
Nambu-Jona-Lasinio model of light nuclei by example of the neutron-proton
radiative capture (M1-capture) n + p -> D + photon, the photomagnetic
disintegration of the deuteron photon + D -> n + p and weak reactions of
astrophysical interest. These are the solar proton burning p + p -> D +
positron + nu_e, the pep-process p + electron + p -> D + nu_e and the neutrino
and anti-neutrino disintegration of the deuteron caused by charged nu_e + D ->
electron + p + p, anti-nu_e + D -> positron + n + n and neutral nu_e(anti-nu_e)
+ D -> nu_e(ant-nu_e) + n + p weak currents.Comment: 49 pages, 3 Postscript figures, Latex. Eur. Phys. J. A8 (in press
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