Y. Sekine

An Operator-Algebraic Exposition of the Thirring-Wehrl Theory of the Quasi-Spin BCS Model

This expository review reformulates the BCS analyses of Haag, Emch--Guenin, and Thirring--Wehrl, together with subsequent operator-algebraic mean-field results of B\'ona, Raggio--Werner, and Bru--de Siqueira Pedra, in the language of quasi-local $C^{\ast}$-algebras and state decompositions. The quasi-spin model is real...