Brownian motion of coupled nonlinear oscillators: Thermalized solitons and nonlinear response to external forces

Journal Article · Mon Jan 23 00:00:00 EST 1978 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.40.206· OSTI ID:5160781

Trullinger, S E; Miller, M D; Guyer, R A; Bishop, A R; Palmer, F; Krumhansl, J A

We study the steady-state dynamical behavior of a set of torsion-coupled pendula in the presence of damping, fluctuating thermal torques, and constant applied torque. For small applied torque, the average angular velocity of the pendula at low temperature is associated with the motion of thermalized sine-Gordon solitons, and, as the torque is increased, the velocity response becomes strongly nonlinear. These results can be used to describe nonlinear response in Josephson transmission lines and weakly pinned one-dimensional charge-density-wave condensates.

• Research Organization: Department of Physics, University of Southern California, Los Angeles, California 90007
• OSTI ID: 5160781
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 40:4
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BROWNIAN MOVEMENT
ANGULAR VELOCITY
DAMPING
DISTRIBUTION FUNCTIONS
EQUATIONS OF MOTION
GRAVITATIONAL FIELDS
NONLINEAR PROBLEMS
PENDULUMS
SOLITONS
STATISTICAL MECHANICS
TORQUE
DIFFERENTIAL EQUATIONS
EQUATIONS
MECHANICS
QUASI PARTICLES
VELOCITY
657006* - Theoretical Physics- Statistical Physics & Thermodynamics- (-1987)