282 citations · 2.6k across the 63 of their papers we have counts for
4 papers · 1 filter
Isosbestic Points: Theory and Applications
M. Greger, M. Kollar, D. Vollhardt
We analyze the sharpness of crossing ("isosbestic") points of a family of curves which are observed in many quantities described by a function f(x,p), where x is a variable (e.g.,…
Numerical solution of the t-J model with random exchange couplings in d=infinity dimensions
Junya Otsuki, Dieter Vollhardt
To explore the nature of the metallic state near the transition to a Mott insulator we investigate the t-J model with random exchange interaction in d=infinity dimensions. A numeri…
Emergence of a common energy scale close to the orbital-selective Mott transition
Markus Greger, Marcus Kollar, Dieter Vollhardt
We calculate the spectra and spin susceptibilities of a Hubbard model with two bands having different bandwidths but the same on-site interaction, with parameters close to the orbi…
Strong-coupling solution of the bosonic dynamical mean-field theory
Anna Kauch, Krzysztof Byczuk, Dieter Vollhardt
We derive an approximate analytical solution of the self-consistency equations of the bosonic dynamical mean-field theory (B-DMFT) in the strong-coupling limit. The approach is bas…