Fluctuating Topological Defects in 2D Liquids: Heterogeneous Motion and Noise

Details Fluctuating Topological Defects in 2D Liquids: Heterogeneous Motion and Noise Fluctuating Topological Defects in 2D Liquids: Heterogeneous Motion and Noise

2002-09-14

arxiv.org/abs/cond-mat/0209334v1

Phys. Rev. Lett. 90, 095504 (2003)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 postscript figures

Scientific paper

10.1103/PhysRevLett.90.095504

We measure the defect density as a function of time at different temperatures in simulations of a two dimensional system of interacting particles. Just above the solid to liquid transition temperature, the power spectrum of the defect fluctuations shows a 1/f signature, which crosses over to a white noise signature at higher temperatures. When 1/f noise is present, the 5-7 defects predominately form string like structures, and the particle trajectories show a 1D correlated motion that follows the defect strings. At higher temperatures this heterogeneous motion is lost. We demonstrate this heterogeneity both in systems interacting with a short ranged screened Coulomb interaction, as well as in systems with a long range logarithmic interaction between the particles.

Affiliated with

Also associated with

No associations

Rating

Fluctuating Topological Defects in 2D Liquids: Heterogeneous Motion and Noise does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fluctuating Topological Defects in 2D Liquids: Heterogeneous Motion and Noise, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluctuating Topological Defects in 2D Liquids: Heterogeneous Motion and Noise will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-356220