Efficiency at maximum power of motor traffic on networks

Abstract

We study motor traffic on Bethe networks subject to hard-core exclusion for both tightly coupled one-state machines and loosely coupled two-state machines that perform work against a constant load. In both cases we find an interaction-induced enhancement of the efficiency at maximum power (EMP) as compared to non-interacting motors. The EMP enhancement occurs for a wide range of network and single motor parameters and is due to a change in the characteristic load-velocity relation caused by phase transitions in the system. Using a quantitative measure of the trade-off between the EMP enhancement and the corresponding loss in the maximum output power we identify parameter regimes where motor traffic systems operate efficiently at maximum power without a significant decrease in the maximum power output due to jamming effects.

9 pages, 9 figures, submitted to Phys. Rev. E

References in corpus (6)

• The totally asymmetric simple exclusion process on networks
• Modelling cytoskeletal traffic: an interplay between passive diffusion and active transport
• Stochastic kinetics of ribosomes: single motor properties and collective behavior
• Effects of the chemomechanical stepping cycle on the traffic of molecular motors
• Efficiency of molecular machines with continuous phase space
• Cooperative effects enhance the transport properties of molecular spider teams

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