76 citations · 80 across the 4 of their papers we have counts for
4 papers
On the Validity of the Weak Value Approximation
Benjamin Noë Bauml
The weak value approximation has been in use for thirty-five years, but it has not as of yet received a truly complete derivation, leaving its mathematical validity in a state of l…
Optical absorption and single-particle excitations in the 2D Holstein t-J model
B. Bäuml, G. Wellein, H. Fehske
To discuss the interplay of electronic and lattice degrees of freedom in systems with strong Coulomb correlations we have performed an extensive numerical study of the two-dimensio…
Dynamical pairing correlations in the t-J model with non-adiabatic hole-phonon coupling
G. Wellein, B. B"auml, H. Fehske
We examine the effects of hole-phonon interaction on the formation of hole pairs in the 2D Holstein t--J model. Using finite-lattice diagonalization techniques, we present exact re…
Polaronic effects in strongly coupled electron-phonon systems: Exact diagonalization results for the 2D Holstein t-J model
H. Fehske, G. Wellein, B. Bäuml +1
Ground-state and dynamical properties of the 2D Holstein t-J model are examined by means of direct Lanczos diagonalization, using a truncation method of the phononic Hilbert space.…