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cond-mat.str-el2015★ 12 cited
Summing parquet diagrams using the functional renormalization group: X-ray problem revisited
Philipp Lange, Casper Drukier, Anand Sharma +1
We present a simple method for summing so-called parquet diagrams of fermionic many-body systems with competing instabilities using the functional renormalization group. Our method…
cond-mat.str-el2014★ 3 cited
Non-analytic magnetic field dependence of quasi-particle properties of two-dimensional metals
Casper Drukier, Philipp Lange, Peter Kopietz
We show that in a weak external magnetic field H the quasi-particle residue and the renormalized electron Lande factor of two-dimensional Fermi liquids exhibit a non-analytic magne…