132 citations · 542 across the 29 of their papers we have counts for
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cond-mat.str-el2004★ 3 cited
Computer aided perturbation theory by cumulants: dimerized and frustrated spin 1/2 chain
S. Sykora, A. Huebsch, K. W. Becker
This paper demonstrates that a computer aided perturbation theory can easily be realized by use of a cumulant approach. In contrast to a recent alternative formulation on the basis…
cond-mat.str-el2004★ 47 cited
Single-particle excitations and phonon softening in the one-dimensional spinless Holstein model
S. Sykora, A. Huebsch, K. W. Becker +2
We investigate the influence of the electron-phonon coupling in the one-dimensional spinless Holstein model at half-filling using both a recently developed projector-based renormal…