Electronic Resource
Springer
Il nuovo cimento della Società Italiana di Fisica
16 (1994), S. 1103-1110
ISSN:
0392-6737
Keywords:
Lattice theory and statistics
;
Ising problems
;
Localized modes
;
Vibrational states in disordered systems
;
Renormalization-group, fractal, and percolation studies of phase transitions
;
Conference proceedings
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Summary The damping of the vibrations of very irregular discretized systems embedded in viscous fluid is studied in the particular case of the vibrations of a percolation cluster. We develop a formal description for the «regularity» of a vibrational mode. This permits us to measure numerically how the local fluctuations in the vibration amplitude increase the viscous damping. We find that a major part of the dissipation is localized in a small fraction of the next-nearest-neighbour pairs. This is a qualitative indication of the existence of a «localization within localization» of the dissipation. The fact that the regularity is found to be larger than that of a single localized state on a linear chain is qualitatively indicative of the structure of the percolation cluster made of blobs and red bonds.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02458790
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