title: Sampling of quantum dynamics at long time.
abstract: The principle of energy conservation leads to a generalized choice of transition probability in a piecewise adiabatic representation of quantum(-classical) dynamics. Significant improvement (almost an order of magnitude, depending on the parameters of the calculation) over previous schemes is achieved. Perspectives for theoretical calculations in coherent many-body systems are opened.
authors.affiliation: School of Physics, University of KwaZulu-Natal, Pietermaritzburg Campus, Private Bag X01, Scottsville, 3209 Pietermaritzburg, South Africa.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Sergi
authors.forename: Francesco
authors.initials: F
authors.lastname: Petruccione
mesh_terms: D003198:Computer Simulation; D008956:Models, Chemical; D015233:Models, Statistical; D011789:Quantum Theory; D018401:Sample Size; D013997:Time Factors