51 citations · 68 across the 4 of their papers we have counts for
4 papers
Theory of a resonant level coupled to several conduction electron channels in equilibrium and out-of-equilibrium
Laszlo Borda, Karoly Vladar, Alfred Zawadowski
The spinless resonant level model is studied when it is coupled by hopping to one of the arbitrary number of conduction electron channels. The Coulomb interaction acts between the…
The Role of Electron-Hole Symmetry Breaking in the Kondo Problems
O. Ujsaghy, K. Vladar, G. Zarand +1
In studying the different Kondo problems it is generally assumed that breaking the electron-hole symmetry does not affect the perturbative infrared divergencies. It is shown here t…
Instability of the marginal commutative model of tunneling centers interacting with metallic environment: Role of the electron-hole symmetry breaking
A. Zawadowski, G. Zarand, P. Nozieres +2
The role of the electron-hole symmetry breaking is investigated for a symmetrical commutative two-level system in a metal using the multiplicative renormalization group in a straig…
Orbital Kondo-effect from tunneling impurities
G. Zarand, K. Vladar
The article reviews recent results for the low energy physics of fast tunneling centers in metallic environments. For strong enough couplings to the environment these tunneling cen…