Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Viability of carbon-based life as a function of the light quark mass   The Hoyle state plays a crucial role in the helium burning of stars that have
reached the red giant stage. The close proximity of this state to the
triple-alpha threshold is needed for the production of carbon, oxygen, and
other elements necessary for life. We investigate whether this life-essential
condition is robust or delicately fine-tuned by measuring its dependence on the
fundamental constants of nature, specifically the light quark mass and the
strength of the electromagnetic interaction. We show that there exist strong
correlations between the alpha-particle binding energy and the various energies
relevant to the triple-alpha process. We derive limits on the variation of
these fundamental parameters from the requirement that sufficient amounts of
carbon and oxygen be generated in stars. We also discuss the implications of
these results for an anthropic view of the universe.

5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int