Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral SU(3) theory of antikaon-nucleon interactions with improved
  threshold constraints   $\bar{K}$-nucleon interactions are investigated in the framework of
coupled-channels dynamics based on the next-to-leading order chiral SU(3)
meson-baryon effective Lagrangian. A recent determination of the 1s shift and
width of kaonic hydrogen enables us to set accurate constraints on the
coupled-channels meson-baryon amplitudes in the strangeness $S=-1$ sector.
Theoretical uncertainties in the subthreshold extrapolation of the
coupled-channels amplitudes are discussed. Using this framework, we give
predictions for $K^-$-neutron interactions and for the spectrum of the
$\Lambda(1405)$ resonance. A simplified, effective three-channel model using
leading order chiral SU(3) meson-baryon interactions is also constructed for
convenient application in $\bar{K}$-nuclear few-body calculations.

29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio