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arXiv · 1510.03942

A thermostat algorithm generating target ensembles

A. Bravetti·D. Tapias
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Abstract

We present a deterministic algorithm called contact density dynamics that generates any prescribed target distribution in the physical phase space. Akin to the famous model of Nosé-Hoover, our algorithm is based on a non-Hamiltonian system in an extended phase space. However the equations of motion in our case follow from contact geometry and we show that in general they have a similar form to those of the so-called density dynamics algorithm. As a prototypical example, we apply our algorithm to produce Gibbs canonical distribution for a one-dimensional harmonic oscillator.

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A. Bravetti, D. Tapias. 2015-12-22. A thermostat algorithm generating target ensembles. https://doi.org/10.1103/physreve.93.022139

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