Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Family of non-equilibrium statistical operators and influence of the
  past on the present   A family of non-equilibrium statistical operators (NSO) is introduced which
differ by the system lifetime distribution over which the quasi-equilibrium
(relevant) distribution is averaged. This changes the form of the source in the
Liouville equation, as well as the expressions for the kinetic coefficients,
average fluxes, and kinetic equations obtained with use of NSO. It is possible
to choose a class of lifetime distributions for which thermodynamic limiting
transition and to tend to infinity of average lifetime of system is reduced to
the result received at exponential distribution for lifetime, used by Zubarev.
However there is also other extensive class of realistic distributions of
lifetime of system for which and after to approach to infinity of average
lifetime of system non-equilibrium properties essentially change. For some
distributions the effect of "finite memory" when only the limited interval of
the past influence on behaviour of system is observed. It is shown, how it is
possible to spend specification the description of effects of memory within the
limits of NSO method, more detailed account of influence on evolution of system
of quickly varying variables through the specified and expanded form of density
of function of distribution of lifetime. The account of character of history of
the system, features of its conduct in the past, can have substantial influence
on non-equilibrium conduct of the system in a present moment time.

21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga