15 citations · 29 across the 5 of their papers we have counts for
5 papers
Quantum criticality and first-order transitions in the extended periodic Anderson model
I. Hagymasi, K. Itai, J. Solyom
We investigate the behavior of the periodic Anderson model in the presence of - Coulomb interaction () using mean-field theory, variational calculation, and exact dia…
Hubbard physics in the symmetric half-filled periodic Anderson-Hubbard model
I. Hagymasi, K. Itai, J. Solyom
Two very different methods -- exact diagonalization on finite chains and a variational method -- are used to study the possibility of a metal-insulator transition in the symmetric…
Periodic Anderson model with correlated conduction electrons: variational and exact diagonalization study
I. Hagymasi, K. Itai, J. Solyom
We investigate an extended version of the periodic Anderson model (the so-called periodic Anderson-Hubbard model) with the aim to understand the role of interaction between conduct…
Periodic Anderson model with d-f interaction
I. Hagymasi, K. Itai, J. Solyom
We investigate an extended version of the periodic Anderson model where an interaction is switched on between the doubly occupied d- and f-sites. We perform variational calculation…
Collective Kondo effect in the Anderson-Hubbard lattice
P. Fazekas, K. Itai
The periodic Anderson model is extended by switching on a Hubbard U for the conduction electrons. We use the Gutzwiller variational method to study the nearly integral valent limit…