Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Active interaction switching controls the dynamic heterogeneity of soft
  colloidal dispersions   We employ Reactive Dynamical Density Functional Theory (R-DDFT) and Reactive
Brownian Dynamics (R-BD) simulations to investigate the dynamics of a
suspension of active soft Gaussian colloids with binary interaction switching,
i.e., a one-component colloidal system in which every particle stochastically
switches at predefined rates between two interaction states with different
mobility. Using R-DDFT we extend a theory previously developed to access the
dynamics of inhomogeneous liquids to study the influence of the switching
activity on the self and distinct part of the Van Hove function in bulk
solution, and determine the corresponding mean squared displacement of the
switching particles. Our results demonstrate that, even though the average
diffusion coefficient is not affected by the switching activity, it
significantly modifies the non-equilibrium dynamics and diffusion coefficients
of the individual particles, leading to a crossover from short to long times,
with a regime for intermediate times showing anomalous diffusion. In addition,
the self-part of the van Hove function has a Gaussian form at short and long
times, but becomes non-Gaussian at intermediates ones, having a crossover
between short and large displacements. The corresponding self-intermediate
scattering function shows the two-step relaxation patters typically observed in
soft materials with heterogeneous dynamics such as glasses and gels. We also
introduce a phenomenological Continuous Time Random Walk (CTRW) theory to
understand the heterogeneous diffusion of this system. R-DDFT results are in
excellent agreement with R-BD simulations and the analytical predictions of
CTRW theory, thus confirming that R-DDFT constitutes a powerful method to
investigate not only the structure and phase behavior, but also the dynamical
properties of non-equilibrium active switching colloidal suspensions.

19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg