A Generalized Duality Transformation of the Anisotropic Xy Chain in a Magnetic Field
نویسنده
چکیده
We consider the anisotropic XY chain in a magnetic field with special boundary conditions described by a two-parameter Hamiltonian. It is shown that the exchange of the parameters corresponds to a similarity transformation, which reduces in a special limit to the Ising duality transformation. BONN HE-93-40 cond-mat/9310055 October 1993 In this paper we consider the anisotropic XY chain in a magnetic field which is defined by the Hamiltonian H (η, q) = − 2 L−1 ∑
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تاریخ انتشار 1993