EDITORS' SUGGESTION
Numerical computation of effective thermal equilibria in stochastically switching Langevin systems
Benjamin L. Walker and Katherine A. Newhall
Phys. Rev. E 105, 064113 (2022)Biological systems are often subject to a combination of stochastically switching forces and Brownian noise. Even though such systems are not in equilibrium, their behavior is similar to an equilibrium system in an effective potential.
EDITORS' SUGGESTION
Physical characteristics of mixed-species swarming colonies
Ajesh Jose, Gil Ariel, and Avraham Be'er
Phys. Rev. E 105, 064404 (2022)Swarming is a collective movement mode used by bacteria to migrate over surfaces. As a step toward the multispecies swarms found in nature, the authors studied dynamics of a two-species swarm. They found that the fraction of each species in the mixture determined dynamics on microscopic and macroscopic scales. The reproduction rate of both species increased when the species were mixed.
EDITORS' SUGGESTION
Dropping mortality by increasing connectivity in plant epidemics
Ignacio Taguas, José A. Capitán, and Juan C. Nuño
Phys. Rev. E 105, 064301 (2022)The spread of pathogens in plant communities can be a major problem, in some cases leading to a loss of biodiversity. This paper describes a model that takes into account how the concentration of pathogens affects a plant’s survival, and shows that having more connections between plants can decrease plant mortality.
EDITORS' SUGGESTION
Fractional defect charges in liquid crystals with -fold rotational symmetry on cones
Grace H. Zhang and David R. Nelson
Phys. Rev. E 105, 054703 (2022)When liquid crystals are placed on the surface of a cone, the conical geometry generally leads to frustrated ground states. The authors study this system as a function of the cone angle and the liquid crystal symmetry, and find good agreement between theory and simulations.
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