skip to main content

DOE PAGESDOE PAGES

This content will become publicly available on February 27, 2017

Title: Traveling wave solutions in a chain of periodically forced coupled nonlinear oscillators

Artificial perceptions of light called phosphenes were motivated by earlier studies. We analyze traveling wave solutions in a chain of periodically forced coupled nonlinear oscillators modeling this phenomenon. We examine the discrete model problem in its co-traveling frame and systematically obtain the corresponding traveling waves in one spatial dimension. Direct numerical simulations as well as linear stability analysis are employed to reveal the parameter regions where the traveling waves are stable, and these waves are, in turn, connected to the standing waves analyzed in earlier work. We also consider a two-dimensional extension of the model and demonstrate the robust evolution and stability of planar fronts. Moreover, our simulations also suggest the radial fronts tend to either annihilate or expand and flatten out, depending on the phase value inside and the parameter regime. Finally, we observe that solutions that initially feature two symmetric fronts with bulged centers evolve in qualitative agreement with experimental observations of phosphenes.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [3]
  1. Univ. of Massachusetts, Amherst, MA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of Massachusetts, Amherst, MA (United States)
  3. Univ. of Pittsburgh, PA (United States)
Publication Date:
OSTI Identifier:
1257982
Report Number(s):
LA-UR--15-23080
Journal ID: ISSN 0167-2789; PII: S0167278916000178
Grant/Contract Number:
FA9550-12-1-0332; FP7; IRSES-605096; DMS-1312508; AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physica. D, Nonlinear Phenomena
Additional Journal Information:
Journal Volume: 325; Journal Issue: C; Journal ID: ISSN 0167-2789
Publisher:
Elsevier
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 97 MATHEMATICS AND COMPUTING Coupled nonlinear oscillators; Discrete model; Traveling waves