ClassSTRONG: Classical simulations of strong field processes

Quantum simulations of classical annealing processes.

We describe a quantum algorithm that solves combinatorial optimization problems by quantum simulation of a classical simulated annealing process. Our algorithm exploits quantum walks and the quantum Zeno effect induced by evolution randomization. It requires order 1/sqrt delta steps to find an optimal solution with bounded error probability, where delta is the minimum spectral gap of the stocha...

Microcanonical initial distribution strategy for classical simulations in strong field physics

Low-cost fermions in classical field simulations

We discuss the possible extension of the bosonic classical field theory simulations to include fermions. This problem has been addressed in terms of the inhomogeneous mean-field approximation by Aarts and Smit. By performing a stochastic integration of an equivalent set of equations we can extend the original 1þ 1 dimensional calculations so that they become feasible in higher dimensions. We te...

Convenient Category of Processes and Simulations 1: Modulo Strong Bisimilarity

Deep categorical analyses of various aspects of concurrency have been developed, but a uniform categorical treatment of the very rst concepts seems to be hindered by the fact that the existing representations of processes as bisimilarity classes do not provide a suucient account of computational morphisms. In the present paper, we describe a category of processes modulo strong bisimulations, wi...

Classical field simulations of thermal Bose-Einstein condensates

The aim of this project is to continue to develop and apply methods for describing the dynamics of Bose-Einstein condensates at finite temperature. The techniques being utilised are approximate; however they are aimed at performing non-perturbative calculations for realistic experimental systems. A focus for 2007 has been the dynamics of condensate formation using the stochastic Gross-Pitaevski...