12 citations · 42 across the 7 of their papers we have counts for
7 papers
Critical pairing fluctuations in the normal state of a superconductor: pseudogap and quasi-particle damping
Philipp Lange, Oleksandr Tsyplyatyev, Peter Kopietz
We study the effect of critical pairing fluctuations on the electronic properties in the normal state of a clean superconductor in three dimensions. Using a functional renormalizat…
Physical dipoles and second order perturbation theory for dipolar fermions in two dimensions
Philipp Lange, Jan Krieg, Peter Kopietz
In two dimensions the Fourier transform of the interaction between two point dipoles has a term which grows linearly in the modulus of the momentum . As a…
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…
Second-order interaction corrections to the Fermi surface and the quasiparticle properties of dipolar fermions in three dimensions
Jan Krieg, Philipp Lange, Lorenz Bartosch +1
We calculate the renormalized Fermi surface and the quasiparticle properties in the Fermi liquid phase of three-dimensional dipolar fermions to second order in the dipole-dipole in…
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…
Evidence for graphene plasmons in the visible spectral range probed by molecules
Philipp Lange, Günter Kewes, Nikolai Severin +2
Graphene is considered to be plasmon active only up to the infrared based on combined tight binding model and random phase approximation calculations. Here we show that the optical…
Damping of phase fluctuations in superfluid Bose gases
Philipp Lange, Peter Kopietz, Andreas Kreisel
Using Popov's hydrodynamic approach we derive an effective Euclidean action for the long-wavelength phase fluctuations of superfluid Bose gases in D dimensions. We then use this ac…