Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Connection between heat diffusion and heat conduction in one-dimensional
  systems   Heat and energy are conceptually different, but often are assumed to be the
same without justification. An effective method for investigating diffusion
properties in equilibrium systems is discussed. With this method, we
demonstrate that for one-dimensional systems, using the indices of particles as
the space variable , which has been accepted as a convention, may lead to
misleading conclusions. We then show that though in one-dimensional systems
there is no general connection between energy diffusion and heat conduction,
however, a general connection between heat diffusion and heat conduction may
exist. Relaxation behavior of local energy current fluctuations and that of
local heat current fluctuations are also studied. We find that they are
significantly different, though the global energy current equals the globe heat
current.

22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an