Integrability and exact solution for coupled BCS systems associated with the su(4) Lie algebra

We introduce an integrable model for two coupled BCS systems through a solution of the Yang-Baxter equation associated with the Lie algebra su(4). By employing the algebraic Bethe ansatz, we determine the exact solution for the energy spectrum. An asymptotic analysis is conducted to determine the leading terms in the ground state energy, the gap and some one point correlation functions at zero temperature. (C) 2002 Published by Elsevier Science B.V.

Klarer Himmel

Soitinnus: piano.

Respuesta educativa a la crisis ambiental.

Existe una investigación previa con el mismo título

Wer Gott vertraut, hat wohl gebaut, Im Himmel und auf Erden; Wer gläubig ist an Jesum Christ dem muß der Himmel werden ...

Geprägte Chromolithographie mit erhabenem Farb- und Golddruck. - Luxuspapier. - Verf. ermittelt