Topological solitons in helical strings
2015 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 91, no 6, 062601Article in journal (Refereed) Published
The low-energy physics of (quasi) degenerate one-dimensional systems is typically understood as the particlelike dynamics of kinks between stable, ordered structures. Such dynamics, we show, becomes highly nontrivial when the ground states are topologically constrained: a dynamics of the domains rather than on the domains which the kinks separate. Motivated by recently reported observations of charged polymers physio-adsorbed on nanotubes, we study kinks between helical structures of a string wrapping around a cylinder. While their motion cannot be disentangled from domain dynamics, and energy and momentum is not concentrated in the solitons, the dynamics of the domains can be folded back into a particle-like description of the local excitations.
Place, publisher, year, edition, pages
2015. Vol. 91, no 6, 062601
IdentifiersURN: urn:nbn:se:kth:diva-171128DOI: 10.1103/PhysRevE.91.062601ISI: 000356900600004OAI: oai:DiVA.org:kth-171128DiVA: diva2:842459
QC 201507202015-07-202015-07-202015-07-20Bibliographically approved