dorsal/arxiv
View SchemaRelaxation channels of two-vibron bound states in \alpha-helix proteins
| Authors | Vincent J. C. Pouthier, Cyril Falvo |
|---|---|
| Categories | |
| ArXiv ID | physics/0310070 |
| URL | https://arxiv.org/abs/physics/0310070 |
| DOI | 10.1103/PhysRevE.69.041906 |
Abstract
Relaxation channels for two-vibron bound states in an anharmonic alpha-helix protein are studied. It is pointed out that the relaxation originates in the interaction between the dressed anharmonic vibrons and the remaining phonons. This interaction is responsible for the occurrence of transitions between two-vibron eigenstates mediated by both phonon absorption and phonon emission. At biological temperature, it is shown that the relaxation rate does not significantly depends on the nature of the two-vibron state involved in the process. Therefore, the lifetime for both bound and free states is of the same order of magnitude and ranges between 0.1 and 1.0 ps for realistic parameters. By contrast, the relaxation channels strongly depend on the nature of the two-vibron states which is a consequence of the breather-like behavior of the two-vibron bound states.
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"abstract": "Relaxation channels for two-vibron bound states in an anharmonic alpha-helix\nprotein are studied. It is pointed out that the relaxation originates in the\ninteraction between the dressed anharmonic vibrons and the remaining phonons.\nThis interaction is responsible for the occurrence of transitions between\ntwo-vibron eigenstates mediated by both phonon absorption and phonon emission.\nAt biological temperature, it is shown that the relaxation rate does not\nsignificantly depends on the nature of the two-vibron state involved in the\nprocess. Therefore, the lifetime for both bound and free states is of the same\norder of magnitude and ranges between 0.1 and 1.0 ps for realistic parameters.\nBy contrast, the relaxation channels strongly depend on the nature of the\ntwo-vibron states which is a consequence of the breather-like behavior of the\ntwo-vibron bound states.",
"arxiv_id": "physics/0310070",
"authors": [
"Vincent J. C. Pouthier",
"Cyril Falvo"
],
"categories": [
"physics.bio-ph"
],
"doi": "10.1103/PhysRevE.69.041906",
"title": "Relaxation channels of two-vibron bound states in \\alpha-helix proteins",
"url": "https://arxiv.org/abs/physics/0310070"
},
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