17 citations · 31 across the 6 of their papers we have counts for
6 papers
High-order terms in the renormalized perturbation theory for the Anderson impurity model
Vassilis Pandis, Alex C. Hewson
We study the renormalized perturbation theory of the single-impurity Anderson model, particularly the high-order terms in the expansion of the self-energy in powers of the renormal…
Analytic results for the Anderson Impurity Model
Vassilis Pandis, Alex C. Hewson
In the Renormalised Perturbation Theory (RPT) the Anderson impurity model is interpreted in terms of renormalised parameters …
Renormalized perturbation theory flow equations for the Anderson impurity model
Vassilis Pandis
We apply the renormalized perturbation theory (RPT) to the symmetric Anderson impurity model. Within the RPT framework exact results for physical observables such as the spin and c…
Numerical integration of discontinuous functions in many dimensions
Vassilis Pandis
We consider the problem of numerically integrating functions with hyperplane discontinuities over the entire Euclidean space in many dimensions. We describe a simple process throug…
Renormalized perturbation theory and scaling for an impurity Anderson model
K. Edwards, A. C. Hewson, V. Pandis
We demonstrate the effectiveness of a generalized renormalized perturbational approach to calculate the induced magnetization for the single impurity Anderson model with a strong o…
Higgs production via gluon fusion from kT-factorisation
Francesco Hautmann, Hannes Jung, Vassilis Pandis
Theoretical studies of Higgs production via gluon fusion are frequently carried out in the limit where the top quark mass is much larger than the Higgs mass, an approximation which…