Interaction of discrete breathers with thermal fluctuations
Discrete breathers (DB) are time-periodic and spatially localized lattice excitations, which can be linearly
 stable or unstable with respect to either localized or extended perturbations. We analyze the interaction
 of DBs with a thermalized background of small amplitude lattice exc...
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| Veröffentlicht in: | Физика низких температур |
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| Datum: | 2008 |
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| Sprache: | Englisch |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/117342 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Interaction of discrete breathers with thermal fluctuations
 / M. Eleftheriou, S. Flach // Физика низких температур. — 2008. — Т. 34, № 7. — С. 701–706. — Бібліогр.: 25 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862538393102057472 |
|---|---|
| author | Eleftheriou, M. Flach, S. |
| author_facet | Eleftheriou, M. Flach, S. |
| citation_txt | Interaction of discrete breathers with thermal fluctuations
 / M. Eleftheriou, S. Flach // Физика низких температур. — 2008. — Т. 34, № 7. — С. 701–706. — Бібліогр.: 25 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | Discrete breathers (DB) are time-periodic and spatially localized lattice excitations, which can be linearly
stable or unstable with respect to either localized or extended perturbations. We analyze the interaction
of DBs with a thermalized background of small amplitude lattice excitations in a one-dimensional lattice of
Morse oscillators with nearest neighbour interaction. We find that stable DBs are barely influenced by the
thermal noise. Unstable DBs are starting to propagate through the lattice, without loosing their localization
character. The instability can be both due to localized perturbations, as well as due to extended perturbations.
We discuss these observations in terms of resonances of DBs with localized and delocalized perturbations,
and relate them to the issue of DB impact on statistical properties of nonlinear lattices.
|
| first_indexed | 2025-11-24T12:20:58Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-117342 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-24T12:20:58Z |
| publishDate | 2008 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Eleftheriou, M. Flach, S. 2017-05-22T14:45:12Z 2017-05-22T14:45:12Z 2008 Interaction of discrete breathers with thermal fluctuations
 / M. Eleftheriou, S. Flach // Физика низких температур. — 2008. — Т. 34, № 7. — С. 701–706. — Бібліогр.: 25 назв. — англ. 0132-6414 PACS: 05.10.–a;05.45.Yv;63.20.Ry https://nasplib.isofts.kiev.ua/handle/123456789/117342 Discrete breathers (DB) are time-periodic and spatially localized lattice excitations, which can be linearly
 stable or unstable with respect to either localized or extended perturbations. We analyze the interaction
 of DBs with a thermalized background of small amplitude lattice excitations in a one-dimensional lattice of
 Morse oscillators with nearest neighbour interaction. We find that stable DBs are barely influenced by the
 thermal noise. Unstable DBs are starting to propagate through the lattice, without loosing their localization
 character. The instability can be both due to localized perturbations, as well as due to extended perturbations.
 We discuss these observations in terms of resonances of DBs with localized and delocalized perturbations,
 and relate them to the issue of DB impact on statistical properties of nonlinear lattices. This work is dedicated to the memory of Arnold
 Markovich Kosevich. His early contributions in the field
 of discrete breathers have been of great importance for
 further progress in the subject. Arnold Markovich's continued
 interest in that field, over decades, was very important,
 and stimulated and motivated the interest of especially
 young researchers in this rapidly evolving area of
 nonlinear dynamics and physics of complex systems. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Низкоразмерные и неупорядоченные системы Interaction of discrete breathers with thermal fluctuations Article published earlier |
| spellingShingle | Interaction of discrete breathers with thermal fluctuations Eleftheriou, M. Flach, S. Низкоразмерные и неупорядоченные системы |
| title | Interaction of discrete breathers with thermal fluctuations |
| title_full | Interaction of discrete breathers with thermal fluctuations |
| title_fullStr | Interaction of discrete breathers with thermal fluctuations |
| title_full_unstemmed | Interaction of discrete breathers with thermal fluctuations |
| title_short | Interaction of discrete breathers with thermal fluctuations |
| title_sort | interaction of discrete breathers with thermal fluctuations |
| topic | Низкоразмерные и неупорядоченные системы |
| topic_facet | Низкоразмерные и неупорядоченные системы |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/117342 |
| work_keys_str_mv | AT eleftherioum interactionofdiscretebreatherswiththermalfluctuations AT flachs interactionofdiscretebreatherswiththermalfluctuations |