Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-energy Electro-weak Reactions   Chiral effective field theory (EFT) provides a systematic and controlled
approach to low-energy nuclear physics. Here, we use chiral EFT to calculate
low-energy weak Gamow-Teller transitions. We put special emphasis on the role
of two-body (2b) weak currents within the nucleus, and discuss their
applications in predicting physical observables.

11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an