Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Power Counting and Wilsonian Renormalization in Nuclear Effective Field
  Theory   Effective field theories are the most general tool for the description of low
energy phenomena. They are universal and systematic: they can be formulated for
any low energy systems we can think of and offer a clear guide on how to
calculate predictions with reliable error estimates, a feature that is called
power counting. These properties can be easily understood in Wilsonian
renormalization, in which effective field theories are the low energy
renormalization group evolution of a more fundamental ---perhaps unknown or
unsolvable--- high energy theory. In nuclear physics they provide the
possibility of a theoretically sound derivation of nuclear forces without
having to solve quantum chromodynamics explicitly. However there is the problem
of how to organize calculations within nuclear effective field theory: the
traditional knowledge about power counting is perturbative but nuclear physics
is not. Yet power counting can be derived in Wilsonian renormalization and
there is already a fairly good understanding of how to apply these ideas to
non-perturbative phenomena and in particular to nuclear physics. Here we review
a few of these ideas, explain power counting in two-nucleon scattering and
reactions with external probes and hint at how to extend the present analysis
beyond the two-body problem.

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The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas