260 citations · 2.8k across the 136 of their papers we have counts for
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cond-mat.stat-mech2004★ 9 cited
Variational Perturbation Theory for Fokker-Planck Equation with Nonlinear Drift
Jens Dreger, Axel Pelster, Bodo Hamprecht
We develop a recursive method for perturbative solutions of the Fokker-Planck equation with nonlinear drift. The series expansion of the time-dependent probability density in terms…
quant-ph2004★ 7 cited
Recursive Calculation of Effective Potential and Variational Resummation
Sebastian F. Brandt, Hagen Kleinert, Axel Pelster
We set up a method for a recursive calculation of the effective potential which is applied to a cubic potential with imaginary coupling. The result is resummed using variational pe…