Soliton ratchets in sine-Gordon systems with additive inhomogeneities.
Phys Rev E Stat Nonlin Soft Matter Phys
; 79(3 Pt 2): 036601, 2009 Mar.
Article
in En
| MEDLINE
| ID: mdl-19392067
ABSTRACT
We investigate the ratchet dynamics of solitons of a sine-Gordon system with additive inhomogeneities. We show by means of a collective coordinate approach that the soliton moves like a particle in an effective potential which is a result of the inhomogeneities. Different degrees of freedom of the soliton are used as collective coordinates in order to study their influence on the motion of the soliton. The collective coordinates considered are the soliton position, its width and offset, and the height of the spikes that appear on the soliton. The results of the theory are compared with numerical simulations of the full system.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Journal subject:
BIOFISICA
/
FISIOLOGIA
Year:
2009
Type:
Article
Affiliation country:
Germany