Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Do anthropic arguments really work?   The anthropic explanation for the peculiarly small observed value of the
cosmological constant $\Lambda_{\rm obs}$ argues that this value promotes the
formation of stars, planets, and ultimately of observers such as ourselves. I
show that a recent analytic model of cosmic star formation predicts that
although $\Lambda_{\rm obs}$ maximises the overall efficiency of star formation
in the universe, the probability of generating observers peaks at $\sim400-500
\, \Lambda_{\rm obs}$. These preliminary results suggest that an immediate
connection between star formation efficiency and observers' generation is not
straightforward, and highlight the subtleties involved with the application of
anthropic reasoning.

29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph