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Configurational temperature control for atomic and molecular systems\ud

By K.P. Travis and C. Braga

Abstract

A new configurational temperature thermostat suitable for molecules with holonomic constraints is derived. This thermostat has a simple set of motion equations, can generate the canonical ensemble in both position and momentum space, acts homogeneously through the spatial\ud coordinates, and does not intrinsically violate the constraints. Our new configurational thermostat is\ud closely related to the kinetic temperature Nosé-Hoover thermostat with feedback coupled to the position variables via a term proportional to the net molecular force. We validate the thermostat by comparing equilibrium static and dynamic quantities for a fluid of n-decane molecules under\ud configurational and kinetic temperature control. Practical aspects concerning the implementation of the new thermostat in a molecular dynamics code and the potential applications are discussed

Publisher: American Institute of Physics
Year: 2008
OAI identifier: oai:eprints.whiterose.ac.uk:3634

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