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-
Frank Schweitzer, Werner Ebeling, Benno Tilch:
-
Complex Motion of Brownian Particles with Energy Depots
- in:
- Physical Review Letters 80/23 (1998) 5044-5047
- Abstract:
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We investigate the motion of Brownian particles which have the ability
to take up energy from the environment, to store it in an internal
depot and to convert internal energy into kinetic energy. The resulting
Langevin equation includes an additional acceleration term. The motion
of the Brownian particles in a parabolic potential is discussed for two
different cases: (i) continous take-up of energy, (ii) take-up of
energy at localized sources. If the take-up of energy is above a
critical value, we found a limit-cycle motion of the particles, which,
in case (ii), can be interrupted by stochastic influences. Including
reflecting obstacles, we found for the deterministic case a chaotic
motion of the particle.
- PACS:
-
05.40.+j, 05.45+b
letter.pdf
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