Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermodynamics of active field theories: Energetic cost of coupling to
  reservoirs   The hallmark of active matter is the autonomous directed motion of its
microscopic constituents driven by consumption of energy resources. This leads
to the emergence of large scale dynamics and structures without any equilibrium
equivalent. Though active field theories offer a useful hydrodynamic
description, it is unclear how to properly quantify the energetic cost of the
dynamics from such a coarse-grained description. We provide a thermodynamically
consistent framework to identify the energy exchanges between active systems
and their surrounding thermostat at the hydrodynamic level. Based on linear
irreversible thermodynamics, we determine how active fields couple with the
underlying reservoirs at the basis of nonequilibrium driving. This leads to
evaluating the rate of heat dissipated in the thermostat, as a measure of the
cost to sustain the system away from equilibrium, which is related to the
irreversibility of the active field dynamics. We demonstrate the applicability
of our approach in two popular active field theories: (i) the dynamics of a
conserved density field reproducing active phase separation, and (ii) the
coupled dynamics of density and polarization describing motile deformable
droplets. Combining numerical and analytical approaches, we provide spatial
maps of dissipated heat, compare them with the irreversibility measure of the
active field dynamics, and explore how the overall dissipated heat varies with
the emerging order.

21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
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The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
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The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int