RPA Green's Functions of the Anisotropic Heisenberg Model

Details RPA Green's Functions of the Anisotropic Heisenberg Model RPA Green's Functions of the Anisotropic Heisenberg Model

2009-11-10

arxiv.org/abs/0911.1932v1

Phil. Mag. 89, 2043 (2009)

Physics

Condensed Matter

Other Condensed Matter

26 pages, 4 figures

Scientific paper

We solve in random-phase approximation the anisotropic Heisenberg model, including nearest and next-nearest neighbour interactions by calculating all Green's functions and pair correlation functions in a cumulant decoupling scheme. The general exposition is pedagogic in tone and is intended to be accessible to any graduate student or physicist who is not an expert in the field.

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