Zobrazeno 1 - 10
of 302
pro vyhledávání: '"Akimoto, Takuma"'
Autor:
Sakai, Issei, Akimoto, Takuma
We explore how the disorder impacts the current fluctuations in the symmetric simple exclusion process (SSEP) within a heterogeneous environment. First, we analyze the SSEP with a defect site under the periodic boundary conditions. We derive the exac
Externí odkaz:
http://arxiv.org/abs/2408.11364
Giant diffusion, where the diffusion coefficient of a Brownian particle in a periodic potential with an external force is significantly enhanced by the external force, is a non-trivial non-equilibrium phenomenon. We propose a simple stochastic model
Externí odkaz:
http://arxiv.org/abs/2404.12761
Autor:
Watanabe, Fuga, Akimoto, Takuma, Best, Robert B., Lindorff-Larsen, Kresten, Metzler, Ralf, Yamamoto, Eiji
In living cells, intrinsically disordered proteins (IDPs), such as FUS and DDX4, undergo phase separation, forming biomolecular condensates. Using molecular dynamics simulations, we investigate their behavior in their respective homogenous droplets.
Externí odkaz:
http://arxiv.org/abs/2401.10438
Autor:
Akimoto, Takuma
Renewal process is a point process where an inter-event time between successive renewals is an independent and identically distributed random variable. Alternating renewal process is a dichotomous process and a slight generalization of the renewal pr
Externí odkaz:
http://arxiv.org/abs/2306.00359
Complex systems such as protein conformational fluctuations and supercooled liquids exhibit a long relaxation time and are considered to posses multiple relaxation times. We analytically obtain the exact correlation function for stochastic processes
Externí odkaz:
http://arxiv.org/abs/2305.11357
Autor:
Kimura, Mutsumi, Akimoto, Takuma
Local diffusivity of a protein depends crucially on the conformation, and the conformational fluctuations are often non-Markovian. Here, we investigate the Langevin equation with non-Markovian fluctuating diffusivity, where the fluctuating diffusivit
Externí odkaz:
http://arxiv.org/abs/2304.12881
Autor:
Sakamoto, Ken, Akimoto, Takuma, Muramatsu, Mayu, Sansom, Mark S. P., Metzler, Ralf, Yamamoto, Eiji
Publikováno v:
PNAS Nexus (2023)
Cell membranes phase separate into ordered ${\rm L_o}$ and disordered ${\rm L_d}$ domains depending on their compositions. This membrane compartmentalization is heterogeneous and regulates the localization of specific proteins related to cell signali
Externí odkaz:
http://arxiv.org/abs/2301.07932
Autor:
Sakai, Issei, Akimoto, Takuma
Publikováno v:
Phys. Rev. E 107, 054131 (2023)
We consider the totally asymmetric simple exclusion processes on quenched random energy landscapes. We show that the current and the diffusion coefficient differ from those for homogeneous environments. Using the mean-field approximation, we analytic
Externí odkaz:
http://arxiv.org/abs/2301.00563
Autor:
Sakai, Issei, Akimoto, Takuma
Publikováno v:
Phys. Rev. E 107, L052103 (2023)
We investigate the current properties in the totally asymmetric simple exclusion process (TASEP) on a quenched random energy landscape. In low- and high-density regimes, the properties are characterized by single-particle dynamics. In the intermediat
Externí odkaz:
http://arxiv.org/abs/2208.10102
We compare ergodic properties of the kinetic energy for three stochastic models of subrecoil-laser-cooled gases. One model is based on a heterogeneous random walk (HRW), another is an HRW with long-range jumps (the exponential model), and the other i
Externí odkaz:
http://arxiv.org/abs/2202.00274