Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous cooling and overcooling of active systems   The phenomenon that a system at a hot temperature cools faster than at a warm
temperature, referred to as the Mpemba effect, has been recently realized for
trapped colloids. Here, we investigate the cooling and heating process of a
self-propelling active colloid using numerical simulations and theoretical
calculations with a model that can directly be tested in experiments. Upon
cooling the particles' active motion induces a Mpemba effect. Transiently the
system can even exhibit smaller temperatures than its final temperature, a
surprising phenomenon which we refer to as activity-induced overcooling.

7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex