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Related Experiment Videos

Solitons in anharmonic chains with ultra-long-range interatomic interactions

Mingaleev1, Gaididei, Mertens

  • 1Bogolyubov Institute for Theoretical Physics, 03143 Kiev, Ukraine.

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|October 25, 2000
PubMed
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Long-range interactions create three pulse soliton types in anharmonic chains. Two stable solitons emerge, one broad and one a two-component bound state, revealing complex soliton dynamics.

Area of Science:

  • Condensed matter physics
  • Nonlinear dynamics
  • Materials science

Background:

  • Anharmonic chains exhibit complex soliton behavior.
  • Long-range interatomic forces significantly impact material properties.
  • Supersonic pulse solitons are crucial for energy and information transfer.

Purpose of the Study:

  • To investigate the effect of ultra-long-range interatomic interactions on supersonic pulse solitons.
  • To characterize the different types of solitons that emerge under these conditions.
  • To analyze the stability and properties of these solitons.

Main Methods:

  • Theoretical modeling of anharmonic chains with screened Coulomb interactions.
  • Analysis of soliton coexistence and stability regimes.

Related Experiment Videos

  • Application of the quasicontinuum approximation for broad solitons.

    • Main Results:

    • Three distinct types of pulse solitons coexist within a specific velocity range.
    • One soliton type is unstable, while two exhibit stable behavior.
    • A high-energy stable soliton is broad and fits the quasicontinuum approximation.
    • A low-energy stable soliton is a two-component bound state (short- and long-range).

    Conclusions:

    • Ultra-long-range interactions fundamentally alter soliton properties in anharmonic chains.
    • The emergence of stable, multi-component solitons highlights the importance of interatomic forces.
    • This research provides insights into the fundamental physics of nonlinear wave propagation in complex systems.