Enhanced Pulse Propagation in Non-Linear Arrays of Oscillators

Physics – Condensed Matter – Statistical Mechanics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

10.1103/PhysRevE.60.5317

The propagation of a pulse in a nonlinear array of oscillators is influenced by the nature of the array and by its coupling to a thermal environment. For example, in some arrays a pulse can be speeded up while in others a pulse can be slowed down by raising the temperature. We begin by showing that an energy pulse (1D) or energy front (2D) travels more rapidly and remains more localized over greater distances in an isolated array (microcanonical) of hard springs than in a harmonic array or in a soft-springed array. Increasing the pulse amplitude causes it to speed up in a hard chain, leaves the pulse speed unchanged in a harmonic system, and slows down the pulse in a soft chain. Connection of each site to a thermal environment (canonical) affects these results very differently in each type of array. In a hard chain the dissipative forces slow down the pulse while raising the temperature speeds it up. In a soft chain the opposite occurs: the dissipative forces actually speed up the pulse while raising the temperature slows it down. In a harmonic chain neither dissipation nor temperature changes affect the pulse speed. These and other results are explained on the basis of the frequency vs energy relations in the various arrays.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Enhanced Pulse Propagation in Non-Linear Arrays of Oscillators 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 Enhanced Pulse Propagation in Non-Linear Arrays of Oscillators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced Pulse Propagation in Non-Linear Arrays of Oscillators will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-462640

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.