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cond-mat.str-el2012★ 19 cited
An alternative functional renormalization group approach to the single impurity Anderson model
Michael Kinza, Jutta Ortloff, Johannes Bauer +1
We present an alternative functional renormalization group (fRG) approach to the single-impurity Anderson model at finite temperatures. Starting with the exact self-energy and inte…
cond-mat.str-el2007★ 17 cited
Non-perturbative conserving approximations and Luttinger's sum rule
Jutta Ortloff, Matthias Balzer, Michael Potthoff
Weak-coupling conserving approximations can be constructed by truncations of the Luttinger-Ward functional and are well known as thermodynamically consistent approaches which respe…