Nose-Hoover dynamics for coherent states

Autor(en): Mentrup, D
Schnack, J 
Stichwörter: AVERAGES; canonical ensemble; ergodic behaviour; mixed quantum classical system; MOLECULAR-DYNAMICS; Physics; Physics, Multidisciplinary; quantum statistics; SYSTEMS; thermostat
Erscheinungsdatum: 2001
Herausgeber: ELSEVIER SCIENCE BV
Journal: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volumen: 297
Ausgabe: 3-4
Startseite: 337
Seitenende: 347
Zusammenfassung: 
The popular method of Nose and Hoover to create canonically distributed positions and momenta in classical molecular dynamics simulations is generalized to a genuine quantum system of infinite dimensionality. We show that for the quantum harmonic oscillator, the equations of motion in terms of coherent states can easily be modified in an analogous manner to mimic the coupling of the system to a thermal bath and create a quantum canonical ensemble. Possible applications to more complex systems, especially interacting Fermion systems, are proposed. (C) 2001 Elsevier Science B.V. All rights reserved.
ISSN: 03784371
DOI: 10.1016/S0378-4371(01)00230-8

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