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Nose equation for a one-dimensional oscillator: Resonance zones and the transition to large-scale irregular dynamics

Journal Article · · Phys. Rev. A; (United States)
Recently, attempts have been made to alter the equation of motion of a multiparticle system so that the temperature rather than the energy is constant. Nose introduced a modified multiparticle equation of motion involving an auxiliary equation with a free parameter Q. We consider the Nose-Hoover equation for a one-dimensional oscillator as the equation of motion for a coupled oscillator system with two degrees of freedom. For different values of Q, we consider the dynamics in the four-dimensional phase space by examining two-dimensional surfaces of section. We show that the overlapping of resonance zones causes a transition to large-scale irregular dynamics for a limited range of Q.
Research Organization:
Department of Chemistry, The University of Ottawa, Ottawa, Canada K1N 9B4
OSTI ID:
7087598
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:6; ISSN PLRAA
Country of Publication:
United States
Language:
English