On Hubbard-Stratonovich transformations over hyperbolic domains
作者： Yan V Fyodorov
DOI: 10.1088/0953-8984/17/20/018
关键词: Random matrix 、 Nonlinear system 、 Hubbard model 、 Symmetry (physics) 、 Physics 、 Identity (philosophy) 、 Mathematical physics
摘要: We discuss and prove the validity of Hubbard–Stratonovich (HS) identities over hyperbolic domains which are used frequently in studies on disordered systems random matrices. also introduce a counterpart HS identity arising with 'chiral' symmetry. Apart from this we outline way deriving nonlinear σ-model gauge-invariant Wegner k-orbital model avoiding use transformations.
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