On the quantum dynamics of Davydov solitons in proteinα-helices
| Autor: | Danko Georgiev, James F. Glazebrook |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Statistics and Probability
Physics Quantum Physics Physics::Biological Physics Quantum dynamics Equations of motion Condensed Matter - Soft Condensed Matter Ehrenfest theorem Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Davydov soliton Schrödinger equation symbols.namesake Quantum mechanics 0103 physical sciences symbols Soliton 010306 general physics Hamiltonian (quantum mechanics) Quantum |
| Zdroj: | Physica A: Statistical Mechanics and its Applications. 517:257-269 |
| ISSN: | 0378-4371 |
| DOI: | 10.1016/j.physa.2018.11.026 |
| Popis: | The transport of energy inside protein $\alpha$-helices is studied by deriving a system of quantum equations of motion from the Davydov Hamiltonian with the use of the Schr\"odinger equation and the generalized Ehrenfest theorem. Numerically solving the system of quantum equations of motion for different initial distributions of the amide I energy over the peptide groups confirmed the generation of both moving or stationary Davydov solitons. In this simulation the soliton generation, propagation, and stability were found to be dependent on the symmetry of the exciton-phonon interaction Hamiltonian and the initial site of application of the exciton energy. Comment: 18 pages, 9 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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