Variational Truncated Wigner Approximation
Quantum Physics
2017-05-11 v2
Abstract
In this paper we reconsider the notion of an optimal effective Hamiltonian for the semiclassical propagation of the Wigner distribution in phase space. An explicit expression for the optimal effective Hamiltonian is obtained in the short time limit by minimizing the Hilbert-Schmidt distance between the semiclassical approximation and the real state of the system. The method is illustrated for the quartic oscillator.
Cite
@article{arxiv.1312.2354,
title = {Variational Truncated Wigner Approximation},
author = {Dries Sels and Fons Brosens},
journal= {arXiv preprint arXiv:1312.2354},
year = {2017}
}