Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible Anthropic Support for a Decaying Universe: A Cosmic Doomsday
  Argument   I have suggested that one possible solution of the Boltzmann brain problem is
that the universe is decaying at an astronomical rate, making it likely to
decay within 20 billion years. A problem with this suggestion is that it seems
to require unnatural fine tuning in the decay mechanism that would not be
explained anthropically. Here it is pointed out that if a spacetime version of
volume averaging were used in the cosmological measure problem, this would give
anthropic support for an impending cosmic doomsday.

25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph