Self-consistency functional equation in strongly correlated electron systems: a different approach
نویسنده
چکیده
We propose a new approach to the self-consistency equation, which arises in the problem of the motion of a hole in a quantum antiferromagnet, appropriate to the case of small exchange energy J . The functional equation for the Green function is transformed into a differential equation; its solutions are analyzed and compared to the existing numerical calculations. This method allows one to study the limit of J → 0. Application to other strongly correlated electron systems is discussed.
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تاریخ انتشار 2006