21 citations · 41 across the 5 of their papers we have counts for
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quant-ph2002★ 21 cited
High-Order Variational Perturbation Theory for the Free Energy
Florian Weissbach, Axel Pelster, Bodo Hamprecht
In this paper we introduce a generalization to the algebraic Bender-Wu recursion relation for the eigenvalues and the eigenfunctions of the anharmonic oscillator. We extend this we…
quant-ph2001★ 3 cited
Variational Perturbation Theory for the Ground-State Wave Function
Axel Pelster, Florian Weissbach
We evaluate perturbatively the density matrix in the low-temperature limit and thus the ground-state wave function of the anharmonic oscillator up to second order in the coupling c…