Recursive calculation of effective potential and variational resummation
Abstract
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 perturbation theory, yielding an exponentially fast convergence.
- Publication:
-
Journal of Mathematical Physics
- Pub Date:
- March 2005
- DOI:
- arXiv:
- arXiv:quant-ph/0406206
- Bibcode:
- 2005JMP....46c2101B
- Keywords:
-
- 03.65.Ge;
- 02.30.Xx;
- Solutions of wave equations: bound states;
- Calculus of variations;
- Quantum Physics
- E-Print:
- Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html Latest update of paper (including all PS fonts) at http://www.physik.fu-berlin.de/~kleinert/350/