Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: There might be giants: unseen Jupiter-mass planets as sculptors of
  tightly-packed planetary systems   The limited completeness of the Kepler sample for planets with orbital
periods $\gtrsim$ 1 yr leaves open the possibility that exoplanetary systems
may host undetected giant planets. Should such planets exist, their dynamical
interactions with the inner planets may prove vital in sculpting the final
orbital configurations of these systems. Using an $N$-body code with additional
forces to emulate the effects of a protoplanetary disc, we perform simulations
of the assembly of compact systems of super-Earth-mass planets with unseen
giant companions. The simulated systems are analogous to Kepler-11 or Kepler-32
in that they contain 4 or 5 inner super-Earths, but our systems also contain
longer-period giant companions which are unlikely to have been detected by
Kepler. We find that giant companions tend to break widely-spaced, first-order
mean-motion resonances, allowing the inner planets to migrate into tighter
resonances. This leads to more compact architectures and increases the
occurrence rate of Laplace resonant chains.

37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat