Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Mathematical Structure of Superspace as a Consequence of Time
  Asymmetry   It is demonstrated how a convenient choice of the mathematical structure of
the quantum cosmology superspace, precisely the definition of a convenient
regular state superspace and the restriction of the dynamics to this space,
yields directly to an irreversible evolution, in the classical (and
semiclassical) phase of the universe, where:
  Decoherence and correlations take place and therefore give origin to a
classical universe. The second law of thermodynamic is demonstrated. Connection
with Reichenbach branch system idea can be implemented. Some rough coincidence
with observational data are obtained. The arrows of time can be correlated.
Time asymmetry can be explained as a state space asymmetry (e. g. like a
spontaneous symmetry breaking All these facts solve the problem of
time-asymmetry and show that it is time asymmetry itself that defines the most
important features of mathematical structure of superspace.

26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con