76 citations · 274 across the 17 of their papers we have counts for
17 papers
Critical quasiparticle theory: Scaling, thermodynamic and transport properties
Elihu Abrahams, Peter Woelfle
We use the recently developed critical quasiparticle theory to derive the scaling behavior associated with a quantum critical point (QCP) in a correlated metal. This is applied to…
Manifestation of the Upper Hubbard band in the 2D Hubbard model at low electron density
M. Yu. Kagan, V. V. Val'kov, P. Woelfle
We consider the 2D Hubbard model in the strong-coupling case (U>>W) and at low electron density (nd^2<<1). We find an antibound state as a pole in the two-particle T-matrix. The co…
Effect of gauge-field interaction on fermion transport in 2D: Hartree conductivity correction and dephasing
T. Ludwig, I. V. Gornyi, A. D. Mirlin +1
We consider the quantum corrections to the conductivity of fermions interacting via a Chern-Simons gauge field, and concentrate on the Hartree-type contributions. The first-order H…
Diagrammatic approximations for the 2d quantum antiferromagnet: exact projection of auxiliary fermions
Jan Brinckmann, Peter Woelfle
We present diagrammatic approximations to the spin dynamics of the 2d Heisenberg antiferromagnet for all temperatures, employing an auxiliary-fermion representation. The projection…
Disorder and temperature dependence of the Anomalous Hall Effect in thin ferromagnetic films: Microscopic model
K. A. Muttalib, P. Woelfle
We consider the Anomalous Hall Effect (AHE) in thin disordered ferromagnetic films. Using a microscopic model of electrons in a random potential of identical impurities including s…
DMRG evaluation of the Kubo formula -- Conductance of strongly interacting quantum systems
Dan Bohr, Peter Schmitteckert, Peter Woelfle
In this paper we present a novel approach combining linear response theory (Kubo) for the conductance and the Density Matrix Renormalization Group (DMRG). The system considered is…