Abstract
We study a model of a nonlinear lattice with an on-site potential that induces a breather gap, i.e. a frequency interval where breathers are unstable. The gap is determined numerically and after thermalization of the system we compute power spectra of local displacements. We find that the gap is clearly manifested at small couplings through a large spectral contribution in the linearized phonon region that is not shifted strongly with temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 20-26 |
| Number of pages | 7 |
| Journal | Physica D: Nonlinear Phenomena |
| Volume | 186 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Dec 1 2003 |
| Externally published | Yes |
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Keywords
- Breathers
- Spectral gap
ASJC Scopus subject areas
- Applied Mathematics
- Statistical and Nonlinear Physics
Cite this
Breathers in one-dimensional nonlinear thermalized lattice with an energy gap. / Eleftheriou, M.; Flach, S.; Tsironis, G. P.
In: Physica D: Nonlinear Phenomena, Vol. 186, No. 1-2, 01.12.2003, p. 20-26.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Breathers in one-dimensional nonlinear thermalized lattice with an energy gap
AU - Eleftheriou, M.
AU - Flach, S.
AU - Tsironis, G. P.
PY - 2003/12/1
Y1 - 2003/12/1
N2 - We study a model of a nonlinear lattice with an on-site potential that induces a breather gap, i.e. a frequency interval where breathers are unstable. The gap is determined numerically and after thermalization of the system we compute power spectra of local displacements. We find that the gap is clearly manifested at small couplings through a large spectral contribution in the linearized phonon region that is not shifted strongly with temperature.
AB - We study a model of a nonlinear lattice with an on-site potential that induces a breather gap, i.e. a frequency interval where breathers are unstable. The gap is determined numerically and after thermalization of the system we compute power spectra of local displacements. We find that the gap is clearly manifested at small couplings through a large spectral contribution in the linearized phonon region that is not shifted strongly with temperature.
KW - Breathers
KW - Spectral gap
UR - http://www.scopus.com/inward/record.url?scp=0242495046&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0242495046&partnerID=8YFLogxK
U2 - 10.1016/S0167-2789(03)00243-4
DO - 10.1016/S0167-2789(03)00243-4
M3 - Article
AN - SCOPUS:0242495046
VL - 186
SP - 20
EP - 26
JO - Physica D: Nonlinear Phenomena
JF - Physica D: Nonlinear Phenomena
SN - 0167-2789
IS - 1-2
ER -