Super-Gaussian, superdiffusive transport of multimode active matter
- Authors
- Hahn, Seungsoo; Song, Sanggeun; Yang, Gil-Suk; Kang, Jingyu; Lee, Kang Taek; Sung, Jaeyoung
- Issue Date
- Oct-2020
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW E, v.102, no.4
- Journal Title
- PHYSICAL REVIEW E
- Volume
- 102
- Number
- 4
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/53797
- DOI
- 10.1103/PhysRevE.102.042612
- ISSN
- 1539-3755
1550-2376
- Abstract
- Living matter often exhibits multimode transport that switches between an active, self-propelled motion and a seemingly passive, random motion. Here, we investigate an exactly solvable model of multimode active matter, such as living cells and motor proteins, which alternatingly undergoes active and passive motion. Our model study shows that the reversible transition between a passive mode and an active mode causes super-Gaussian transport dynamics, observed in various experiments. We find the non-Gaussian character of the matter's displacement distribution is essentially determined by the population ratio between active and passive motion. Interestingly, under a certain population ratio of the active and passive modes, the displacement distribution changes from sub-Gaussian to super-Gaussian as time increases. The mean-square displacement of our model exhibits transient superdiffusive dynamics, yet recovers diffusive behavior at both the short- and long-time limits. We finally generalize our model to encompass complex, multimode active matter in an arbitrary spatial dimension.
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- Appears in
Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
- Da Vinci College of General Education > 1. Journal Articles
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