Nonequilibrium, weak-field-induced cyclotron motion: A mechanism for magnetobiology
| Autor: | Ashot Matevosyan, Armen E. Allahverdyan |
|---|---|
| Rok vydání: | 2021 |
| Zdroj: | Physical Review E. 104 |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/physreve.104.064407 |
| Popis: | There is a long-time quest for understanding physical mechanisms of weak magnetic field interaction with biological matter. Two factors impeded the development of such mechanisms: first, a high (room) temperature of a cellular environment, where a weak, static magnetic field induces a (classically) zero equilibrium response. Second, the friction in the cellular environment is large, preventing a weak field to alter nonequilibrium processes such as a free diffusion of charges. Here we study a class of nonequilibrium steady states of a cellular ion in a confining potential, where the response to a (weak, homogeneous, static) magnetic field survives strong friction and thermal fluctuations. The magnetic field induces a rotational motion of the ion that proceeds with the cyclotron frequency. Such nonequilibrium states are generated by a white noise acting on the ion additionally to the nonlocal (memory-containing) friction and noise generated by an equilibrium thermal bath. The intensity of this white noise can be weak, i.e., much smaller than the thermal noise intensity. |
| Databáze: | OpenAIRE |
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