Quantum Corrections in Superconductor Models

The Nambu–Jona–Lasinio model of light nuclei

“…As has been shown in Refs. [4][5][6][7][8][9][10][11] the ENJL model with chiral U(3) × U(3) symmetry describes at the quark level perfectly well strong lowenergy interactions of hadrons in the form of Effective Chiral Lagrangians [12,13].…”

“…The most interesting effective quark model allowing to describe analytically both SBχS and bosonization (creation of bound qq states with quantum numbers of observed low-lying mesons) is the extended Nambu-Jona-Lasinio (ENJL) model [4][5][6][7][8][9][10][11] with linear [7,8,10] and non-linear [9,11] realization of chiral U(3) × U(3) symmetry. As has been shown in Ref.…”

“…The couplings of low-lying mesons and baryons are described by Effective Chiral Lagrangians with chiral U(3) × U(3) symmetry [4][5][6][7][8][9][10][11][12][13].…”

“…Following the procedure described in Refs. [4][5][6][7][8][9][10][11] for the inclusion of local interpolating meson fields in the ENJL model we get…”

“…The one-nucleon loop approximation of low-energy nuclear forces allows (i) to transfer nucleon flavours from an initial to a final nuclear state by a minimal way and (ii) to take into account contributions of nucleon-loop anomalies [28][29][30][31], which are fully defined by one-nucleon loop diagrams [29][30][31]. It is well-known that quark-loop anomalies play an important role for the correct description of strong low-energy interactions of low-lying hadrons [4][5][6][7][8][9][10][11][12][13]. We argue the dominant role of nucleon-loop anomalies for the correct description of low-energy nuclear forces in nuclear physics.…”