Eur. Phys. J. B 50, 315-320 (2006)
https://doi.org/10.1140/epjb/e2006-00127-8

Symplectic integration approach for metastable systems

Institute of Solid State Physics, University of Latvia, 8 Kengaraga St., 1063 Riga, Latvia

Corresponding author: ^a klotins@cfi.lu.lv

Received: 28 September 2005
Revised: 5 December 2005
Published online: 12 April 2006

Abstract

Nonadiabatic behavior of metastable systems modeled by anharmonic Hamiltonians is reproduced by the Fokker-Planck and imaginary time Schrödinger equation scheme with subsequent symplectic integration. Example solutions capture ergodicity breaking, reassure the H-theorem of global stability [M. Shiino, Phys. Rev. A 36, 2393 (1987)], and reproduce spatially extended response under alternate source fields.