Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reply to Comment on "Fluctuation-dissipation relations in the
  non-equilibrium critical dynamics of Ising models"   We have recently shown that in non-equilibrium spin systems at criticality
the limit $\Xin$ of the fluctuation-dissipation ratio X(t,tw) for t >> tw >> 1
can be measured using observables such as magnetization or energy [Phys. Rev.\
E {\bf 68}, 016116 (2003)]. Pleimling argues in a Comment [cond-mat/0309652] on
our paper that for such observables correlation and response functions are
dominated by one-time quantities dependent only on t, and are therefore not
suitable for a determination of $\Xin$. Using standard scaling forms of
correlation and response functions, as used by Pleimling, we show that our data
do have a genuine two-time dependence and allow X(t,tw) and $\Xin$ to be
measured, so that Pleimling's criticisms are easily refuted. We also compare
with predictions from renormalization-group calculations, which are consistent
with our numerical observation of a fluctuation-dissipation plot for the
magnetization that is very close to a straight line. A key point remains that
coherent observables make measurements of $\Xin$ easier than the traditionally
used incoherent ones, producing fluctuation-dissipation plots whose slope is
close to $\Xin$ over a much larger range.

18
The categories of this paper are: econ
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th