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Spectral Properties of the Anderson Impurity Model, Comparison of Numerical Renormalization Group and Non--Crossing Approximation
T. A. Costi, J. Kroha, P. Wolfle
A comparative study of the numerical renormalization group and non-crossing approximation results for the spectral functions of the Anderson impurity model is carried ou…
Theory of Shubnikov--De Haas Oscillations Around the Filling Factor of the Landau Level: Effect of Gauge Field Fluctuations
A. G. Aronov, E. Altshuler, A. D. Mirlin +1
We present a theory of magnetooscillations around the Landau level filling factor based on a model with a fluctuating Chern--Simons field. The quasiclassical treatment of t…
Numerical Renormalization Group Study of Pseudo-Fermion and Slave-Boson Spectral Functions in the Single Impurity Anderson Model
T. A. Costi, P. Schmitteckert, J. Kroha +1
We use the numerical renormalization group to calculate the auxiliary spectral functions of the Anderson impurity model. The slave--boson and pseudo--fermion spectral fu…
Localization of Charged Quantum Particles in a Static Random Magnetic Field
A. G. Aronov, A. D. Mirlin, P. Woelfle
We consider a charged quantum particle in a random magnetic field with Gaussian, delta-correlated statistics. We show that although the single particle properties are peculiar, two…